Brain function improvement promotion device, brain function improvement promotion system, brain function improvement promotion method, brain function

Abstract

The brain function improvement promotion device comprises: a brain function improvement contribution exercise intensity measurement unit; a target brain function improvement contribution exercise intensity calculation unit; a first determining unit for determining whether or not the measured brain function improvement contribution exercise intensity of a user has become equal to or greater than a target brain function improvement contribution exercise intensity; a sustain time measurement control unit that, when it is determined that the user's brain function improvement contribution exercise intensity has become equal to or greater than the target brain function improvement contribution exercise intensity, performs control so as to measure the sustain time, which is the duration for which the user's brain function improvement contribution exercise intensity is equal to or greater than the target brain function improvement contribution exercise intensity; and a display control unit that, when it is determined that the total of the sustain time has reached a target time, performs control so as to display, on a display screen, the target health function improvement contribution exercise intensity calculated by the target health function improvement contribution exercise intensity calculation unit, actual related data and time, and display data generated by a display data generation unit.

Description

TITLE OF THE INVENTION: BRAIN FUNCTION IMPROVEMENT FACILITATING DEVICE, BRAIN FUNCTION IMPROVEMENT FACILITATING SYSTEM, FACILITATING BRAIN FUNCTION IMPROVEMENT FACILITATING METHOD, BRAIN FUNCTION IMPROVEMENT FACILITATING PROGRAM, AND RECORDING MEDIUM Technical Field

[0001] The present disclosure relates to a brain function improvement facilitating device, a brain function improvement facilitating system, a brain function improvement facilitating method, a brain function improvement facilitating program, and a recording medium. This application claims priority to lapanese Patent Application No. 2023-040576, which was filed on March 15, 2023, and is incorporated herein by reference in its entirety. Background Art

[0002] Programs for achieving cognitive function improvement are disclosed (for example, Patent Literature 1). Patent Literature 1 describes that a head-mounted display worn by a user displays a viewpoint image of a virtual body of the user in a virtual reality space when the virtual body performs an exercise at a second exercise intensity smaller than a first exercise intensity. Citation List Patent Literature

[0003] Patent Literature 1: Japanese Patent Application Publication No. 2021-81864 Summary of Invention Technical Problem

[0004] In recent years, it has been recognized that performing exercise with a certain exercise intensity is beneficial for suppressing or improving declines of brain function, such as slowing the progress of dementia or improving dementia. However, general users often do not know what type of exercise will achieve suppression of declines or improvement of their brain function. Consequently, exercises the user independently perform to suppress decline of or improve brain function might be insufficient or inappropriate. In addition, since users may lack confidence in whether their exercises are suitable or not, they might cease regular exercises. Such situations are undesirable for users seeking to suppress declines of or improve brain function.

[0005] It is therefore an object of the present disclosure to provide a brain function improvement facilitating device capable of easily facilitating decline suppression and improvement of brain function appropriate for users. This brain function improvement facilitating device is also applicable for the purpose of slowing progress of dementia and improving dementia, for example. Solution to Problem

[0006] A brain function improvement facilitating device according to the present disclosure is attachable to a body of a user and facilitates brain function improvement of the user. The brain function improvement facilitating device includes: a storage that stores data; a display screen that displays data; a timer that measures a time; a brain function improvement contribution exercise intensity measurement unit that measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user; a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit; a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator; a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit; a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit; a storage controller that controls the storage to store information indicating that the total of the duration time has reached the target time if the second determiner determines that the total of the duration time has reached the target time; a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time; and a display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator. Advantageous Effects of Invention

[0007] The brain function improvement facilitating device described above can easily facilitate brain function improvement appropriate for the user. Brief Description of Drawings

[0008] [FIG. 1] FIG. 1 schematically illustrates an appearance of a brain function improvement facilitating device according to a first embodiment. [FIG. 2] FIG. 2 is a block diagram illustrating a configuration of the brain function improvement facilitating device illustrated in FIG. 1. [FIG. 3] FIG. 3 is a flowchart depicting typical process steps in calculating and setting a target exercise intensity. [FIG. 4] FIG. 4 is a flowchart depicting typical process steps in facilitating brain function improvement with the brain function improvement facilitating device according to the first embodiment. [FIG. 5] FIG. 5 is a schematic view illustrating an example of display data displayed on a display screen. [FIG. 6] FIG. 6 is a block diagram illustrating a brain function improvement facilitating system according to a second embodiment. [FIG. 7] FIG. 7 is a schematic view illustrating an example of display data displayed on a display screen. [FIG. 8] FIG. 8 is a schematic view illustrating an example of display data displayed on the display screen. Description of Embodiments

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be listed and described. A brain function improvement facilitating device according to the present disclosure is attachable to a body of a user and facilitates brain function improvement of the user. The brain function improvement facilitating device includes: a storage that stores data; a display screen that displays data; a timer that measures a time; a brain function improvement contribution exercise intensity measurement unit that measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user; a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit; a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator; a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit; a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit; a storage controller that controls the storage to store information indicating that the total of the duration time has reached the target time if the second determiner determines that the total of the duration time has reached the target time; a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time; and a display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator.

[0010] Inventors of the present disclosure have focused on effectiveness of exercises with a certain level of intensity in, for example, suppressing declines of brain function of a user or improvement of brain function of the user including suppression of progress of dementia, improvement of cognitive abilities, or the like. In view of this, users may attempt to engage in prolonged exercises such as running to improve brain function. Running herein is an example of an exercise with a certain exercise intensity. Aerobic exercises such as monotonous running are relatively strenuous, and it is often difficult to sustain such exercises. Moreover, the inventors of the present disclosure have considered that, in many cases, even without engaging in running with such a high exercise intensity, consistency can be effective for suppressing declines of brain function, improve brain function, and others. Therefore, the inventors considered that it is important to clearly define a target exercise intensity necessary or desirable for suppressing a decline of brain function or improving brain function when engaging an exercise. For ease of explanation, suppression of a decline of brain function will be herein included in the concept of improvement of brain function. Here, the inventors of the present disclosure focused on the fact that exercises satisfying the target exercise intensity can be found in daily activities, even without conscious engagement of users in strenuous exercises such as running. For example, the inventors further focused on the fact that activities such as walking a dog, brisk walking during a commute, or climbing stairs may satisfy the target exercise intensity. The inventors hypothesized that raising awareness of users that these everyday activities (regardless of whether the activities are aerobic or anaerobic) can improve brain function would lead to sustained engagement in exercises satisfying the target exercise intensity, and consequently would effectively facilitate improvement of brain function in the case of intentional exercise for improvement of brain function and the case of exercises for other health maintenance or improvement or in daily routines without such special awareness.

[0011] The inventors of the present disclosure further considered as follows. An exercise that satisfies the target exercise intensity necessary or desirable for the user to facilitate brain function improvement is a balance between a target brain function improvement contribution exercise intensity that is a target index value of an exercise intensity contributing to brain function improvement of the user, and a target time. That is, although the target brain function improvement contribution exercise intensity can be set with a certain range while being set according to the attribute of the user or the like, the higher the target brain function improvement contribution exercise intensity is, the higher the effects for facilitating brain function improvement are. On the other hand, since an exercise with a higher target brain function improvement contribution exercise intensity is more strenuous, it may be difficult for some users to perform the exercise continuously or without interruption. If it becomes difficult to perform the exercise continuously or without interruption, or if the exercise is not continued in some cases, the effects of brain function improvement decrease, or the exercise may be meaningless.

[0012] With the brain function improvement facilitating device described above, the brain function improvement facilitating device attached to the body of a user measures a brain function improvement contribution exercise intensity of the user over time, measures a duration time in which the brain function improvement contribution exercise intensity is greater than or equal to the target brain function improvement contribution exercise intensity, and when the measured time reaches a target time to be reached within a predetermined time limit, displays information indicating that the measured time has reached the target time on a display screen. In addition, by activating the brain function improvement facilitating device, it is also possible to calculate a target brain function improvement contribution exercise intensity and a target time set as a target exercise intensity necessary or desirable for the user to facilitate brain function improvement, and display the target exercise intensity on the display screen. This makes it possible to visually recognize on the display screen that an exercise with a certain exercise intensity that leads to improvement of brain function in a daily life has been performed. Accordingly, the user can be aware that an exercise with a certain exercise intensity that leads to improvement of brain function is performed in a daily life without difficulty. That is, even if the user does not actively go to a sport gym or other places to perform a certain exercise such as running, the user can be aware that the user is performing an exercise with a certain exercise intensity that leads to brain function improvement. The brain function improvement facilitating device is, of course, utilized even in cases where the user intentionally exercises to improve brain function and where the user exercises to maintain or improve other health conditions. Specifically, in performing such an exercise, to clarify a target exercise intensity necessary or desirable for facilitating brain function improvement, the device may calculate a target brain function improvement contribution exercise intensity and a target time to display the target exercise intensity on the display screen. Accordingly, the user can continuously perform an exercise that leads to brain function improvement without performing an excessively strenuous exercise. Further, since the user can grasp that the user has performed a certain exercise effective for improving brain function by the display on the display screen, even in a daily life without such special consciousness, the user can facilitate brain function improvement by trying to perform an exercise satisfying the target exercise intensity. In this manner, the brain function improvement facilitating device described above can easily facilitate brain function improvement appropriate for the user.

[0013] In the brain function improvement facilitating device, if the second determiner does not determine that the duration time has not reached the target time, the second determiner may determine whether the duration time has reached a first set time shorter than the target time. If the second determiner determines that the duration time has reached the first set time, the storage controller may control the storage to store information indicating that the duration time has reached the first set time. If the second determiner determines that the duration time has reached the first set time, the display data generator may generate display data to be displayed on the display screen based on reaching the first set time. With this configuration, even if the duration time does not reach the target time, as long as the duration time has reached the first set time, the user can easily visually recognize that the duration time has reached the first set time. In a case where the duration time does not reach the target time and it is useful to store and display for facilitating brain function improvement, not only the first set time but also a second set time and an Nth set time (where N is an integer greater than or equal to 3) may be used as a plurality of set times. Therefore, by effectively setting the set time, and storing and displaying the duration time to approach the target time, it is possible to encourage the user to continuously or uninterruptedly perform a certain exercise similar to that in ordinary life, which can lead to facilitation of brain function improvement. The first set time, the second set time, or the N-th set time may be a minimum time that can be observed as a unit (here, minute or second) for measuring time such as one minute or one second as long as the time can be observed. Alternatively, the first set time, the second set time, or the N-th set time may be added so that the time can gradually approach the target time that should be reached within a predetermined time limit, which is an effective target time leading to brain function improvement.

[0014] In the brain function improvement facilitating device, if the second determiner determines that the duration time has reached the first set time, the storage controller may control the storage to store data of the duration time. With this configuration, even if the duration time does not reach the target time, the duration time is added and displayed, for example, so that it is possible to visually appeal that the user has performed an effective exercise leading to brain function improvement. This can lead to facilitating brain function improvement through an exercise within a predetermined time limit.

[0015] In the brain function improvement facilitating device, the brain function improvement may include at least one of suppression of progress of dementia, suppression of atrophy of brain including a negative change of brain morphology, or improvement of a brain health score. The certain exercise described above is significantly effective in suppressing the progress of dementia, suppressing atrophy of brain morphology including a negative change in brain morphology, and improving brain health scores.

[0016] In the brain function improvement facilitating device, if the first determiner does not determine that the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity within a certain period of the time measured by the timer from a predetermined timing, the display data generator may generate display data indicating that the first determiner does not determine that the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity. This configuration makes it possible to visually appeal to the user that the user does not perform an exercise for a certain period of time so that the brain function improvement contribution exercise intensity is greater than or equal to the target brain function improvement contribution exercise intensity. Accordingly, it is possible to facilitate the user to perform an exercise at a brain function improvement contribution exercise intensity greater than or equal to the target brain function improvement contribution exercise intensity in a daily life.

[0017] In the brain function improvement facilitating device, determination by the first determiner may be refreshed at each predetermined timing. This configuration makes it possible to effectively facilitate repetitive certain exercises for a short period such as one week or a long period such as several months.

[0018] In the brain function improvement facilitating device, the target brain function improvement contribution exercise intensity calculator may calculate the target brain function improvement contribution exercise intensity using at least one of a rule-based model, a machine learning model, or a deep learning model. This makes it possible to calculate a target brain function improvement contribution exercise intensity that is more meaningful for the user, and to easily facilitate brain function improvement that is more appropriate for the user. In this case, the target brain function improvement contribution exercise intensity may be calculated using any one of the rule-based model, the machine learning model, and the deep learning model, may be calculated using a method combining the rule-based model and the machine learning model, a method combining the rule-based model and the deep learning model, or a method combining the machine learning model and the deep learning model, or may be calculated using a method using the three models of the rule-based model, the machine learning model, and the deep learning model. The target brain function improvement contribution exercise intensity may be, of course, calculated using a method combining any one of the rule-based model, the machine learning model, and the deep learning model with another method.

[0019] In the brain function improvement facilitating device, the target brain function improvement contribution exercise intensity calculator may calculate, as the target brain function improvement contribution exercise intensity, an optimized target brain function improvement contribution exercise intensity that is a brain function improvement contribution exercise intensity as high as possible while satisfying a condition of performing an exercise continuously or without interruption.

[0020] To maximize the effects of brain function improvement for the user, it is useful to set the target brain function improvement contribution exercise intensity as high as possible while satisfying the condition of performing an exercise continuously or without interruption. Such setting of the target brain function improvement contribution exercise intensity varies among individual users, depending on factors such as the user's age, gender, exercise experience (any of short-term, medium-term, or long-term exercises), physical ability, and motivation. [0021 ] In view of this, the inventors of the present disclosure considered that “setting the target brain function improvement contribution exercise intensity as high as possible while satisfying a condition of performing an exercise continuously or without interruption” is effective for maximizing the effects of improving brain function, and a method for determining a target brain function improvement contribution exercise intensity suitable for each user depending on factors such as the age, gender, exercise experience, physical ability, and motivation of the user. This is applicable to the brain function improvement facilitating device, and to any of a brain function improvement facilitating system, a brain function improvement facilitating method, a brain function improvement facilitating program, and a recording medium described later.

[0022] The “target brain function improvement contribution exercise intensity as high as possible while satisfying the condition of performing an exercise continuously or without interruption” is defined as an “optimized target brain function improvement contribution exercise intensity.”

[0023] An optimized target brain function improvement contribution exercise intensity of a user is calculated from a target brain function improvement contribution exercise intensity calculator by inputting qualitative or quantitative information including (1) and (2):

[0024] (1) Information obtained by the target brain function improvement contribution exercise intensity calculator is (a) a target brain function improvement contribution exercise intensity of a user.

[0025] (2) Information obtained by input from the user is (a) a target time of an exercise in the case of exercising from now on and (b) a target or preference level of the user (hereinafter referred to as a “user preference” and may be represented as “Pi”) with respect to an exercise intensity of the exercise. Such a brain function improvement facilitating program can easily promote brain function improvement appropriate for the user.

[0026] The user preference (Pi) may be represented as an objective numerical value (e.g., a percentage notation such as “80%” in the case of exercising at full strength) serving as a plurality of options from the target brain function improvement contribution exercise intensity calculator. Alternatively, the user preference (Pi) may be selected from a plurality of subjective options (e.g., five levels of highest, high, middle, low, easy, or the like) by the user. In this case, the target brain function improvement contribution exercise intensity calculator converts the subjective options into appropriate objective numerical values by a predetermined calculation formula.

[0027] As information for calculating the optimized target brain function improvement contribution exercise intensity, information other than the information (1) and (2) may be input. For example, an age or gender of the user may be input from the target brain function improvement contribution exercise intensity calculator, a sleep time last night and other healthcare data may be input from the device, or evaluation information regarding physical conditions of the day may be input from the user.

[0028] The optimized target brain function improvement contribution exercise intensity is a brain function improvement contribution exercise intensity satisfying all of (3), (4), and (5):

[0029] (3) The brain function improvement contribution exercise intensity is greater than or equal to a brain function improvement contribution exercise intensity necessary for facilitating brain function improvement for the user.

[0030] (4) The brain function improvement contribution exercise intensity is a brain function improvement contribution exercise intensity at which an exercise can be performed with a constant brain function improvement contribution exercise intensity in a duration time (expressed as X minutes, for example, 35 minutes). The “constant” herein is a concept having a certain degree of width, and refers to, for example, keeping a brain function improvement contribution exercise intensity corresponding to a range from 95% or more and 105% or less of a brain function improvement contribution exercise intensity set as an optimized target brain function improvement contribution exercise intensity. For example, in a case where the optimized target brain function improvement contribution exercise intensity is 80, the brain function improvement contribution exercise intensity is 76 or more and 84 or less is referred to as constant.

[0031] (5) The brain function improvement contribution exercise intensity is obtained after multiplying the “exercise intensity” in the calculation formula of the “target brain function improvement contribution exercise intensity” by an “objective numerical value” conforming to the user preference (Pi).

[0032] As the calculation formula model constituting the target brain function improvement contribution exercise intensity calculator and used for obtaining an optimized target brain function improvement contribution exercise intensity, various methods such as the machine learning model and the deep learning model as well as the rule-based model can be used.

[0033] In the case of the rule-based model, a calculation rule of the optimized target brain function improvement contribution exercise intensity is defined based on research results and knowledge of existing sports medicine, science, and the like, and the optimized target brain function improvement contribution exercise intensity is predicted by the calculation rule.

[0034] In the case of the machine learning model, various methods such as a support vector machine (SVM), decision trees, a random forest, and a K-nearest neighbor can be used. In the case of the deep learning model, various methods such as a multi-layer neural network (MNN), a recurrent neural network (RNN), a long short-term memory network (LSTM), a convolutional neural network (CNN), and a transformer can be used. These methods optimize parameters of a model by performing supervised learning with given data including an input and an output, and output an “optimized target brain function improvement contribution exercise intensity” that is a target brain function improvement contribution exercise intensity as high as possible while satisfying a condition of performing an exercise continuously or without interruption.

[0035] The formula constituting the target brain function improvement contribution exercise intensity calculator and used for obtaining the optimized target brain function improvement contribution exercise intensity is leaned for optimizing the target brain function improvement contribution exercise intensity of the user using feedback from the user as a reward by reinforcement leaning, and is changed accordingly. That is, in a case where the user actually exercises after obtaining the optimized target brain function improvement contribution exercise intensity, the following results can be obtained.

[0036] (6) Duration time of the exercise

[0037] (7) Volatility of a brain function improvement contribution exercise intensity with a target brain function improvement contribution exercise intensity as an axis during the exercise

[0038] (8) User's subjective evaluation on a presented exercise intensity (target brain function improvement contribution exercise intensity) (if possible) Such a brain function improvement facilitating program can easily promote brain function improvement appropriate for the user.

[0039] The calculation formula for obtaining an optimized target brain function improvement contribution exercise intensity is not limited to a single method among the rule-based model, the machine learning model, and the deep learning model described above, and a further optimized output of the user can be performed by combining a plurality of models.

[0040] Through the foregoing process, the formula constituting the target brain function improvement contribution exercise intensity calculator and used for obtaining the optimized target brain function improvement contribution exercise intensity is learned for each user constantly or as appropriate. In this manner, it is possible to achieve the original purpose of “maximizing the effects of brain function improvement” by “setting the target brain function improvement contribution exercise intensity as high as possible while satisfying the condition of performing an exercise continuously or without interruption” for each user.

[0041] A leaning procedure of the leaning model is performed in any case based on the following approach.

[0042] (A) Prepare the i-th input xi.

[0043] (B) Give the input to a model F (• ; 9) having a parameter 9, and calculate a prediction yi = F (xi; 9) for the i-th data.

[0044] (C) Calculate an error between the prediction yi and a correct answer yi of the i- th data.

[0045] (D) Update the parameter 0 of the model based on the error.

[0046] (E) Perform the steps (A) through (D) for all the leaning data until the leaning of the model converges in development data.

[0047] In the brain function improvement facilitating device described above, the brain function improvement contribution exercise intensity may include at least one of an oxygen intake amount, calorie consumption, the number of steps, a rate of perceived exertion, or a repetition maximum.

[0048] The inventors of the present disclosure have focused on a brain function improvement contribution exercise intensity that is an exercise intensity contributing to brain function improvement, with respect to an exercise with a certain exercise intensity effective for, for example, suppressing declines of brain function of a user or improving brain function of the user, such as suppression of progress of dementia and improvement of cognitive abilities. In this regard, it is known that the extent to which an exercise with a certain exercise intensity, effective for a certain person in suppressing declines of brain function of a user or improving brain function of the user, such as suppression of progress of dementia or improvement of dementia, actually has a beneficial influence on that person is regulated by the certain exercise intensity, exercise duration, and frequency of the exercise. Methods for expressing this exercise intensity will be collectively referred to as a “brain function improvement contribution exercise intensity.” The brain function improvement contribution exercise intensity is defined as a method for expressing an exercise with an exercise intensity at which the effect of improving brain function or cognitive function is exhibited.

[0049] Examples of the method for expressing the “brain function improvement contribution exercise intensity” include the following expression methods.

[0050] In a case where calorie consumption is used as an expression method, a numerical value of a target calorie is set, and then the brain function improvement facilitating device or the brain function improvement facilitating system measures an actual physical activity and a duration time thereof, evaluates the numerical value of a calorie actually consumed based on a predetermined criterion, determines whether or not the numerical value is achieved and a degree thereof, and generates a result thereof. The evaluation based on the predetermined criterion may be based on a unit indicating a physical activity called METs.

[0051] The oxygen intake amount is used as an index of aerobic endurance, and one of index values of reference exercise intensity is a maximum oxygen intake amount (V02max), which is a maximum amount of oxygen that the body can consume during an exercise. Specifically, the V02max is a maximum amount of oxygen that can be taken in one minute per a weight of 1 kg. The higher V02max allows the lungs to take oxygen more effectively and deliver more oxygen to the muscles of the heart or the like, thereby increasing the amount of blood that can be delivered in a single heart beat. In a case where the V02max is used as an expression method, a target V02max and a duration time thereof are set, and then, the brain function improvement facilitating device or the brain function improvement facilitating system measures a numerical value of a V02max and a duration time thereof based on an actual physical activity, evaluates the measured numerical value and duration time based on a predetermined criterion, determines whether or not the numerical value is achieved and a degree thereof, and generate a result thereof. As another reference exercise intensity for the oxygen intake amount, a peak oxygen intake amount (VO2peak), which is a peak value of an oxygen intake amount obtained by a specific progressive overload protocol, may be used.

[0052] A rate of perceived exertion (RPE) method is a method for expressing a subjective load level during an exercise by a number, and is an expression method in which a user indicates how difficult an activity during an exercise is physically and mentally. Specifically, examples of the expression method include a Borg scale and a modified Borg scale (category-ratio scale). In the case of the RPE method, since the user needs to express the scale with their own sense, a target scale point and a duration time thereof are set, and then, a scale point of an actual physical activity to be performed by the user from now are input to the brain function improvement facilitating device or the brain function improvement facilitating system, and the brain function improvement facilitating device or the brain function improvement facilitating system measures an exercise corresponding to the scale point and a duration time thereof, evaluates the exercise based on a predetermined criterion, determines whether or not the target scale point is achieved and a degree thereof, and generates a result thereof.

[0053] The repetition maximum (RM) method is a method for determining an exercise intensity based on how many times joint motion can be repeated with respect to a certain weight. A load at a limit of X times is represented as an XRM. That is, specifically, a load that can be repeated once at the maximum is represented as 1 RM, and a load that can be repeated five times at the maximum is represented as 5 RM. In the range from 1 RM to 3 RM where the load is high, improvement of the nervous system and increase in muscle strength are expected, whereas in the range of 12 RM or more where the load is low, aerobic exercise with a certain intensity is expected as well as increase in muscle endurance. In the case of the RPE method, since the user needs to express the scale with their own sense, a target X (where X is the number of times of repeated loads, such as 1 or 12), a weight corresponding to the target X, and a duration time thereof are set, and then, an X of an actual physical activity to be performed by the user from now and a corresponding weight are input to the brain function improvement facilitating device or the brain function improvement facilitating system, and the brain function improvement facilitating device or the brain function improvement facilitating system measures an exercise corresponding to the X and the weight and a duration time thereof, evaluates the exercise based on a predetermined criterion, determines whether or not the target X is achieved and a degree thereof, and generates a result thereof.

[0054] In a case where the number of steps is used as an expression method, the number of steps on a certain day may be set as a target, and then the brain function improvement facilitating device or the brain function improvement facilitating system may measure the number of steps on the certain day, evaluate the number of steps based on a predetermined criterion, determine whether or not the target is achieved and a degree thereof, and generate a result thereof. Not only measuring the number of steps, but also taking into account an average walking speed and an average stride length, the device or system may determine whether a physical activity corresponding to the number of steps was a brisk walk or evaluated as jogging, as well as a duration time thereof, and comprehensively set the exercise intensity and a duration time of the physical activity as a target, and then, evaluate the physical activity based on a predetermined criterion, determine whether or not the target is achieved and a degree thereof, and generate a result thereof. The number of steps includes an index of the number of steps adjusted using an average walking speed and / or an average stride length.

[0055] A brain function improvement facilitating system according to the present disclosure is a brain function improvement facilitating system that facilitates improvement of brain function of a user and includes: a measurement sensor attachable to a body of the user and including a brain function improvement contribution exercise intensity measurement unit that measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user; and a terminal device communicable with the measurement sensor, wherein the terminal device includes a storage that stores data, a display screen that displays data, a timer that measures a time, a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit, a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator, a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit, a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity, a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit, a storage controller that controls the storage to store information indicating that the duration time has reached the target time if the second determiner determines that the duration time has reached the target time, a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time, and a display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator.

[0056] This brain function improvement facilitating system can easily facilitate improvement of brain function appropriate for the user.

[0057] A brain function improvement facilitating method according to the present disclosure is a brain function improvement facilitating method for facilitating improvement of brain function of a user and includes: measuring a brain function improvement contribution exercise intensity that is an exercise intensity contributing to brain function improvement of the user over time; calculating a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit; setting the calculated target brain function improvement contribution exercise intensity and target time; determining whether the measured brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; performing control to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if it is determined that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; determining whether a total of the duration time measured within the predetermined time limit has reached the target time; performing control to store information indicating that the duration time has reached the target time if it is determined that the duration time has reached the target time; generating display data to be displayed based on reaching the target time if it is determined that the total of the duration time has reached the target time; and performing control to display at least one of the calculated target brain function improvement contribution exercise intensity, actual related data and time, or the generated display data.

[0058] This brain function improvement facilitating method can easily facilitate improvement of brain function appropriate for the user.

[0059] A brain function improvement facilitating program according to the present disclosure is a brain function improvement facilitating program for use in a brain function improvement facilitating system that facilitates improvement of brain function of a user, the system includes a measurement sensor that is attachable to a body of the user and measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user, and a terminal device including a storage that stores data, a display screen that displays data, and a timer that measures a time, the terminal device being communicable with the measurement sensor, and the program causes the terminal device to function as: a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit; a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator; a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit; a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit; a storage controller that controls the storage to store information indicating that the duration time has reached the target time if the second determiner determines that the duration time has reached the target time; a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time; and a display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator.

[0060] This brain function improvement facilitating program can easily facilitate improvement of brain function appropriate for the user.

[0061] A recording medium according to the present disclosure is a computer-readable recording medium for use in a brain function improvement facilitating system that facilitates improvement of brain function of a user and includes a measurement sensor attachable to a body of the user and including a brain function improvement contribution exercise intensity measurement unit that measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user, and a terminal device including a storage that stores data, a display screen that displays data, and a timer that measures a time, the terminal device being communicable with the measurement sensor, and the recording medium causes the terminal device to function as: a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit; a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator; a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit; a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit; a storage controller that controls the storage to store information indicating that the duration time has reached the target time if the second determiner determines that the duration time has reached the target time; a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time; and a display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator.

[0062] This storage medium can easily facilitate improvement of brain function appropriate for the user.

[0063] [Details of Embodiments of the Present Invention] Embodiments of the brain function improvement facilitating device according to the present disclosure will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated.

[0064] (FIRST EMBODIMENT) A configuration of a brain function improvement facilitating device according to a first embodiment of the present disclosure will be described. FIG. 1 schematically illustrates an appearance of the brain function improvement facilitating device according to the first embodiment. FIG. 2 is a block diagram illustrating a configuration of the brain function improvement facilitating device illustrated in FIG. 1

[0065] With reference to FIGS. 1 and 2, a brain function improvement facilitating device 11 according to the first embodiment is detachably attached to the body of a user. That is, the user can attach and detach the brain function improvement facilitating device 11 according to the first embodiment to and from the body of the user. The brain function improvement facilitating device 11 is, for example, a wristwatch type, and can be worn by being wound around an arm of the user. The device may be of a type other than a wristwatch type, and may be of, for example, a wrist band type or a ring type. In addition, the wristwatch type, the wrist band type, the ring type, and the like may be used, for example, in a case where a mask and data necessary for direct measurement of the oxygen intake amount are linked. The mask is, of course, also removable from the body of the user.

[0066] The brain function improvement facilitating device 11 includes a display screen 12 that displays data, and a band 13 that is used when the device is wound around an arm of the user. When the brain function improvement facilitating device 11 is wound around the arm of the user with the band 13, the display screen 12 is positioned at a position where the display screen 12 can be visually recognized by the user. The brain function improvement facilitating device 11 further includes buttons 14 for various settings located on a side surface of the display screen 12.

[0067] The brain function improvement facilitating device 11 includes a controller 21 that controls the brain function improvement facilitating device 11 itself, a storage memory 22 as a storage, a brain function improvement contribution exercise intensity measurement unit 23 that measures a brain function improvement contribution exercise intensity of the user over time, a communication unit 24 that performs communication between the brain function improvement facilitating device 11 and the outside, and a timer 25 that measures a time. Since the brain function improvement facilitating device 11 includes the timer 25, the brain function improvement facilitating device 11 can also function as a simple clock. The oxygen intake amount measurement unit 23 may measure an oxygen intake amount from a mask that enables measurement of the oxygen intake amount with which data is associated. Alternatively, the oxygen intake amount measurement unit 23 may measure an oxygen intake amount by estimating the oxygen intake amount by a predetermined calculation formula from a heart rate measured by the brain function improvement facilitating device 11 of a wristwatch type, a wrist band type, a ring type, or the like.

[0068] The controller 21 includes a target oxygen intake amount calculator 31 as a target brain function improvement contribution exercise intensity calculator, a setting unit 32, a first determiner 33, a duration time measurement controller 34, a second determiner 35, a storage controller 36, a display data generator 37, and a display controller 38. The target oxygen intake amount calculator 31 calculates a target oxygen intake amount that is a target brain function improvement contribution exercise intensity set as a target exercise intensity necessary for facilitating brain function improvement for the user, and a target time to be reached within a predetermined time limit. The setting unit 32 sets the target oxygen intake amount and the target time calculated by the target oxygen intake amount calculator 31. The first determiner 33 determines whether the oxygen intake amount of the user measured by the oxygen intake amount measurement unit 23 is greater than or equal to the target oxygen intake amount set by the setting unit 32. If the first determiner 33 determines that the oxygen intake amount of the user is greater than or equal to the target oxygen intake amount, the duration time measurement controller 34 controls the timer 25 to measure a duration time in which the oxygen intake amount of the user is greater than or equal to the target oxygen intake amount. The second determiner 35 determines whether a total of the duration time measured within a predetermined time limit has reached the target time set by the setting unit 32. If the second determiner 35 determines that the duration time has reached the target time, the storage controller 36 controls the storage to store information indicating that the duration time has reached the target time. If the second determiner 35 determines that the total of the duration time has reached the target time, the display data generator 37 generates display data to be displayed on the display screen 12 based on reaching the target time. The display controller 38 controls the display screen 12 to display at least one of the target oxygen intake amount generated by the target oxygen intake amount calculator 31, actual related data and time, or the display data generated by the display data generator 37. These configurations will be described in detail later.

[0069] Next, a case where the oxygen intake amount that is a target brain function improvement contribution exercise intensity is calculated, and set will be described. FIG. 3 is a flowchart depicting typical process steps in calculating and setting a target oxygen intake amount. Referring to FIG. 3, first, the user wears the brain function improvement facilitating device 11 on an arm of the user. Here, the brain function improvement facilitating device 11 causes the oxygen intake amount measurement unit 23 to start measurement of a peak oxygen intake amount by pressing a switch or the like (step S11 in FIG. 3, “step” will be hereinafter omitted). After a lapse of a predetermined time, the measurement of the peak oxygen intake amount by the oxygen intake amount measurement unit 23 is finished (SI2). Then, the target oxygen intake amount calculator 31 calculates and sets a target oxygen intake amount and a target time (SI3).

[0070] Examples of the target oxygen intake amount include the following. First, the oxygen intake amount measurement unit 23 measures a peak oxygen intake amount that is a peak value of an oxygen intake amount obtained by a predetermined progressive overload protocol. The peak oxygen intake amount may be obtained by an input from the user. The peak oxygen intake amount varies among users. A value calculated by the following equation is a target peak oxygen intake amount.

[0071] target oxygen intake amount = exercise intensity x peak oxygen intake amount Here, the exercise intensity is a numerical value set by the user, and is represented by a percentage, and for example, a value such as 50% or 60% is selected.

[0072] The target time to be reached within a predetermined time limit is set to be 120 minutes or 150 minutes per week, for example. The target time does not need to be achieved by a single exercise, and rather it is often desirable to achieve a balanced and continuous exercise through a week. In this case, the duration time that has reached the predetermined set time is accumulated multiple times, and thus, reaches the target time such as 120 minutes or 150 minutes. For the purpose of brain function improvement, one type of the set time of 60 minutes may be prepared as a single set time. For example, if an exercise exceeding 60 minutes is performed twice a week, the exercise is accumulated to 120 minutes, and 120 minutes that is the target time in a week is achieved with the condition satisfied. As for the set time, for the purpose of brain function improvement, two types of set times, that is, 30 minutes as a first set time and 5 minutes as a second set time may be prepared. The second set time may be a certain continuous time that is considered to be minimally effective for brain function improvement or may be a time that is a minimum value for satisfying a condition that the exercise is continuously or uninterruptedly performed in displaying to the user. For example, when the user performs a 30-minute exercise (that reaches the second set time and the first set time) twice in a week and performs a 5-minute exercise (that does not reach the first set time but reaches the second set time) 12 times, the exercise time is 120 minutes in total, which achieves 120 minutes that is the target time in one week with the condition satisfied. The target oxygen intake amount and the target time set as the target exercise intensity may be displayed on the display screen described later. Although 30 minutes is defined as the first set time, the present disclosure is not limited to this example, and when useful for the purpose of brain function improvement, a time that is a minimum value that can be observed may be defined as the first set time, such as 1 minute, 1 second, or 0.01 second, as long as the time can be observed. In a case where a time shorter than the first set time, such as 1 minute, is defined as the second set time, a time that is a minimum value that can be observed, such as 30 seconds or 0.01 second, may be defined as the second set time, as long as the time can be observed. Three or more set times may be used if these set times are useful for the purpose of brain function improvement.

[0073] The target oxygen intake amount calculator 31 may calculate, as a target oxygen intake amount, an optimized target oxygen intake amount that is a target oxygen intake amount as high as possible while satisfying a condition of performing an exercise continuously or without interruption. That is, the target oxygen intake amount calculator 31 may calculate, as a target oxygen intake amount, an optimized target oxygen intake amount that is an oxygen intake amount as high as possible while satisfying a condition of performing an exercise continuously or without interruption. The optimized target oxygen intake amount may be calculated using at least one of the rule-based model, the machine learning model, or the deep learning model described above.

[0074] Thereafter, the target oxygen intake amount and the target time are set by the setting unit 32.

[0075] Next, in a situation where the target exercise intensity is set, operation of the brain function improvement facilitating device 11 as described above will be described. FIG. 4 is a flowchart depicting typical process steps in facilitating brain function improvement with the brain function improvement facilitating device 11 according to the first embodiment. As the set time, for the purpose of brain function improvement, one type of the set time may be prepared as a single set time or two or more types of set times may be prepared. In FIG. 4, two types of set times, the first set time and the second set time, are set.

[0076] Referring to FIG. 4, when the user wears the brain function improvement facilitating device 11 on an arm of the user, the oxygen intake amount measurement unit 23 included in the brain function improvement facilitating device 11 detects an oxygen intake amount of the user. Then, the oxygen intake amount measurement unit 23 measures the oxygen intake amount of the user over time (S21). That is, the oxygen intake amount measurement unit 23 starts measuring the oxygen intake amount of the user over time. In this case, the measurement of the oxygen intake amount of the user by the oxygen intake amount measurement unit 23 may be started by detecting pressing of the button 14 included in the brain function improvement facilitating device 11. The brain function improvement facilitating device 11 may include a mechanism that measures a heart rate such that when the device is worn by the user, the mechanism measures the heart rate, and based on this measurement, the mechanism measures an estimated value of the oxygen intake amount, and the oxygen intake amount measurement unit 23 thereby starts measurement of the oxygen intake amount.

[0077] After the start of measurement of the oxygen intake amount, the user goes about daily activities while wearing the brain function improvement facilitating device 11 on the arm. In this case, the user performs an exercise to move the body of the user, such as walking a dog, doing household work, or doing garden work. This daily exercise does not include running and swimming recognized as an aerobic exercise by the user. For example, assume that the user performs an exercise of continuing to work for a long time with a dog while walking the dog. The first determiner 33 determines whether the oxygen intake amount of the user measured by the oxygen intake amount measurement unit 23 is greater than or equal to the target oxygen intake amount set for each user (S22).

[0078] If the first determiner 33 determines that the oxygen intake amount of the user is greater than or equal to the target oxygen intake amount (YES in S22), the duration time measurement controller 34 controls the timer 25 to measure a duration time in which the oxygen intake amount of the user is greater than or equal to the target oxygen intake amount (S23).

[0079] Then, the user continues to walk the dog. Accordingly, the oxygen intake amount greater than or equal to the target oxygen intake amount continues. Here, the second determiner 35 determines whether the measured duration time has reached the predetermined second set time or not (S24). The second set time here is defined as a certain continuous time that is considered to be minimally effective for improving brain function. The second set time is shorter than the first set time described later.

[0080] If the second determiner 35 determines that the duration time has reached the second set time, the oxygen intake amount is continuously measured thereafter. Thue user continues to walk the dog.

[0081] Subsequently, the second determiner 3 5 determines whether the duration time has reached the first set time longer than the second set time (S25). The first set time is a time recognized as a certain exercise considered to be effective for improving brain function in a series of continuous exercises, and a numerical value such as 30 minutes (1800 seconds) is selected, for example.

[0082] If the second determiner 3 5 determines that the duration time has reached the first set time (YES in S25), the second determiner 35 determines whether a total of the duration time measured within a predetermined time limit has reached the target time (S26). In this case, if the second determiner 35 determines that the total of the duration time measured within the predetermined time limit reaches the target time (YES in S26), control is performed such that information indicating the total of the duration time has reached the target value is stored in the storage memory 22 (S27).

[0083] Thereafter, the display data generator 37 generates display data to be displayed on the display screen 12 and indicating that the second determiner 35 determines that the total of the duration time has reached the target time (S28). Then, the display controller 38 controls the display screen 12 to display the display data generated by the display data generator 37 (S29).

[0084] FIG. 5 is a schematic view illustrating an example of display data displayed on the display screen 12. Referring to FIG. 5, the display screen 12 displays display data 41 of a duration time that is a time in which an oxygen intake amount greater than or equal to the target oxygen intake amount is measured, display data 42 of an oxygen intake amount that is a measured oxygen intake amount (that is not limited to an oxygen intake amount at a current time but may be an average of oxygen intake amounts in a certain period including the oxygen intake amount at the current time), and display data 43 of characters “Excellent” that is a word of a reward for reaching the target time. When the user returns from dog walking, the user can visually recognize the data 41, 42, and 43 visualized on the display screen 12.

[0085] The brain function improvement facilitating device 11 according to the present disclosure can easily facilitate brain function improvement appropriate for the user.

[0086] In S24, if the second determiner 35 does not determine that the duration time has reached the second set time (NO in S24), the process returns to S22, and it is determined whether the measured oxygen intake amount is greater than or equal to the target oxygen intake amount. In S25, if the second determiner 35 does not determine that the duration time has reached the first set time (NO in S25), the storage controller 36 controls the storage memory 22 to store information indicating that the duration time has reached the second set time and data of the duration time (S30). In this case, the total of the duration time may be displayed. Then, the second determiner 35 determines whether a total of the duration time in a predetermined time limit has reached the target time (S31). If it is not determined that the duration time has reached the target time (NO in S31), the process returns to S22, and it is determined whether the measured oxygen intake amount is greater than or equal to the target oxygen intake amount. On the other hand, if it is determined that the duration time has reached the target time (YES in S31), controls is performed such that information indicating that the duration time has reached the target time is stored in the storage memory 22 (S27). Thereafter, the display data generator 37 generates display data to be displayed on the display screen 12 and indicating that the second determiner 35 determines that the total of the duration time has reached the target time (S28). Then, the display controller 38 performs the display screen 12 to display the display data generated by the display data generator 37 (S29).

[0087] In S26, if the second determiner 35 does not determine that the total of the duration time has reached the target time (NO in S26), the storage controller 36 controls the storage memory 22 to store information indicating that the total of the duration time has reached the first set time and data of the duration time (S32). In this case, the total of the duration time may be displayed. Similarly, the second determiner 35 determines whether the total of the duration time in the predetermined time limit has reached the target time (S31). If it is not determined that total of the duration time has reached the target time (NO in S31), the process returns to S22, and it is determined whether the measured oxygen intake amount is greater than or equal to the target oxygen intake amount. On the other hand, if it is determined that the total of the duration time has reached the target time (YES in S31), controls is performed such that information indicating that the total of the duration time has reached the target time is stored in the storage memory 22 (S27). The subsequent steps S28 and S29 are similar to those described above.

[0088] With this configuration, even if the duration time does not reach the target time, as long as the duration time has reached the first set time, the user can easily visually recognize that the duration time has reached the first set time. Thus, the user can facilitate brain function improvement by trying to perform the same constant exercise in a daily life continuously or without interruption to approach the target time. The same holds for the second set time.

[0089] In this manner, even if the duration time does not reach the target time, the duration time is added and displayed, for example, so that it is possible to visually appeal that the user has performed an effective exercise leading to brain function improvement. This can lead to facilitating brain function improvement through an exercise within a predetermined time limit.

[0090] Such a routine is performed at predetermined intervals, for example, every week. For example, the target time is set at 120 minutes, and the set time is divided into two types such that the first set time is 30 minutes and the second set time is 5 minutes. If a condition is set such that the first set time of 30 minutes needs to be achieved at least twice a week, the display on the display screen facilitates the user to perform an exercise including at least two 30-minute exercises per week, resulting in a total of 120 minutes of exercise. In this case, the total of 120 minutes may also be achieved by performing four 30-minute exercises (30 minutes * 4 = 120 minutes) or by combining two 30-minute exercises (30 minutes * 2) with twelve 5-minute exercises (5 minutes x 12) each of which is the second set time, adding up to 120 minutes of exercise. In the case of performing a single 90-minute exercise exceeding the first set time, this exercise may be combined with one 30-minute exercise, that is, one instance of the first set time, within the same week to achieve a total of 120 minutes for the week.

[0091] (SECOND EMBODIMENT) A second embodiment as another embodiment will now be described. FIG. 6 is a block diagram illustrating a brain function improvement facilitating system according to the second embodiment. The brain function improvement facilitating system according to the second embodiment is different from the brain function improvement facilitating device 11 according to the first embodiment in including a measurement sensor that measures an oxygen intake amount and a terminal device.

[0092] Referring to FIG. 6, a brain function improvement facilitating system 51 is a brain function improvement facilitating system that facilitates improvement of brain function of a user. The brain function improvement facilitating system 51 includes a measurement sensor 52 that is attachable to the body of the user and measures an oxygen intake amount of the user over time, and a terminal device 53 communicable with the measurement sensor 52. The measurement sensor 52 includes a measurement sensor communication unit 54 that communicates with the outside, a measurement sensor controller 55 that controls the measurement sensor 52 itself, an oxygen intake amount measurement unit 56 that measures an oxygen intake amount and serves as a brain function improvement contribution exercise intensity measurement unit that measures a brain function improvement contribution exercise intensity, which is an exercise intensity contributing brain function improvement of the user, a brain function improvement contribution exercise intensity measurement unit in this embodiment, and a measurement sensor memory 57 as a storage. The terminal device 53 includes a terminal device communication unit 61 that communicates with the outside, a terminal device controller 62 that controls the terminal device 53 itself, a display screen 63, a timer 64 that measures a time, and a terminal device memory 65 as a storage for storing data. The terminal device controller 62 includes: a target oxygen intake amount calculator 71 as a brain function improvement contribution exercise intensity calculator that calculates a target oxygen intake amount set as a target exercise intensity necessary for facilitating brain function improvement for the user and a target time to be reached within a predetermined time limit; a setting unit 72 that sets the target oxygen intake amount and the target time set by the target oxygen intake amount calculator 71; a first determiner 73 that determines whether the oxygen intake amount of the user measured by the oxygen intake amount measurement unit 56 is greater than or equal to the target oxygen intake amount set by the setting unit 72; a duration time measurement controller 74 that controls the timer 64 to measure a duration time in which the oxygen intake amount of the user is greater than or equal to the target oxygen intake amount if the first determiner 73 determines that the oxygen intake amount of the user is greater than or equal to the target oxygen intake amount; a second determiner 75 that determines whether a total of the duration time measured within a predetermined time limit has reached the target time set by the setting unit 72; a storage controller 76 that controls the terminal device memory 65 to store information indicating that the duration time has reached the target time if the second determiner 75 determines that the duration time has reached the target time; a display data generator 77 that generates display data to be displayed on the display screen 63 based on reaching the target time if the second determiner 75 determines that the duration time has reached the target time; and a display controller 78 that controls the display screen to display at least one of the target oxygen intake amount calculated by the target oxygen intake amount calculator 71, actual related data and time, or the display data generated by the display data generator 77.

[0093] Each of FIGS. 7 and 8 is a schematic view illustrating an example of display data displayed on the display screen 63. First, referring to FIG. 7, the display screen 63 displays, in addition to various data displays, region data 81a visually indicating the degree of achievement of exercise as the size of a circle, graph data 82a indicating, for example, an achieved exercise intensity corresponding to the day of this week, icon data 83a for operation, and other data. The user visually recognizes especially the size of the circle of the region data 81a shown in FIG. 7 and is motivated to exercise. Referring to FIG. 8, the display screen 63 displays, in addition to various data displays, region data 81b visually indicating the degree of achievement of exercise as the size of a circle, graph data 82b indicating, for example, an achieved exercise intensity corresponding to the day of this week, icon data 83b for operation, and other data. The user visually recognizes especially the smallness of the circle of the region data 81b shown in FIG. 8 and is motivated to exercise.

[0094] The brain function improvement facilitating system 51 described above can easily facilitate improvement of brain function appropriate for the user.

[0095] (OTHER EMBODIMENTS) In the embodiments described above, if the first determiner does not determine that the oxygen intake amount of the user measured by the oxygen intake amount measurement unit is greater than or equal to the target oxygen intake amount within a certain period of the time measured by the timer from a predetermined timing, the display data generator may generate display data indicating that the first determiner does not determine that the oxygen intake amount of the user measured by the oxygen intake amount measurement unit is greater than or equal to the target oxygen intake amount. This configuration makes it possible to visually appeal to the user that the user does not perform an exercise in which the oxygen intake amount is greater than or equal to the target oxygen intake amount for a certain period of time. Accordingly, it is possible to facilitate the user to perform an aerobic exercise with an oxygen intake amount greater than or equal to the target oxygen intake amount in a daily life.

[0096] In the embodiments described above, determination by the first determiner may be refreshed at each predetermined timing. This configuration makes it possible to effectively facilitate repetitive certain aerobic exercises in a short period such as one week or a long period such as several months.

[0097] In the embodiments described above, the brain function improvement may include at least one of suppression of progress of dementia, suppression of atrophy of brain morphology, or improvement of a brain health score. The certain aerobic exercise described above is significantly effective for suppressing the progress of dementia, suppressing atrophy of brain morphology, and improving the brain health score.

[0098] The embodiment has been described using mainly the oxygen intake amount for the brain function improvement contribution exercise intensity. However, the present disclosure is not limited to this example, and any of the calorie consumption, the number of steps, the rate of perceived exertion, or the repetition maximum described above may also be used as the brain function improvement contribution exercise intensity. That is, the brain function improvement contribution exercise intensity may be at least one of the oxygen intake amount, calorie consumption, the number of steps, the rate of perceived exertion, or the repetition maximum. For example, in a case where calorie consumption is applied as the brain function improvement contribution exercise intensity, the brain function improvement facilitating device or the brain function improvement facilitating system may include a calorie consumption measurement unit as a brain function improvement contribution exercise intensity measurement unit and a target calorie consumption calculator as a target brain function improvement contribution exercise intensity calculator. In a case where the number of steps is applied as the brain function improvement contribution exercise intensity, for example, the brain function improvement facilitating device or the brain function improvement facilitating system may include a step number measurement unit as a brain function improvement contribution exercise intensity measurement unit and a target step number calculator as a target brain function improvement contribution exercise intensity calculator. In a case where the rate of perceived exertion is applied as the brain function improvement contribution exercise intensity, the brain function improvement facilitating device or the brain function improvement facilitating system may include a perceived exertion rate measurement unit as a brain function improvement contribution exercise intensity measurement unit and a target perceived exertion rate calculator as a target brain function improvement contribution exercise intensity calculator. In a case where the repetition maximum is applied as the brain function improvement contribution exercise intensity, the brain function improvement facilitating device or the brain function improvement facilitating system may include a repetition maximum measurement unit as a brain function improvement contribution exercise intensity measurement unit and a target repetition maximum calculator as a target brain function improvement contribution exercise intensity calculator.

[0099] A brain function improvement facilitating method according to the present disclosure is a brain function improvement facilitating method for facilitating improvement of brain function of a user and includes: measuring a brain function improvement contribution exercise intensity that is an exercise intensity contributing to brain function improvement of the user over time; calculating a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit; setting the calculated target brain function improvement contribution exercise intensity and target time; determining whether the measured brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; performing control to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if it is determined that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; determining whether a total of the duration time measured within the predetermined time limit has reached the target time; performing control to store information indicating that the duration time has reached the target time if it is determined that the duration time has reached the target time; generating display data to be displayed based on reaching the target time if it is determined that the total of the duration time has reached the target time; and performing control to display at least one of the calculated target brain function improvement contribution exercise intensity, actual related data and time, or the generated display data.

[0100] This brain function improvement facilitating method can easily facilitate improvement of brain function appropriate for the user.

[0101] A brain function improvement facilitating program according to the present disclosure is a brain function improvement facilitating program for use in a brain function improvement facilitating system that facilitates improvement of brain function of a user, the system includes a measurement sensor that is attachable to a body of the user and measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user, and a terminal device including a storage that stores data, a display screen that displays data, and a timer that measures a time, the terminal device being communicable with the measurement sensor, and the program causes the terminal device to function as: a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit; a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator; a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit; a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit; a storage controller that controls the storage to store information indicating that the duration time has reached the target time if the second determiner determines that the duration time has reached the target time; a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time; and a display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator.

[0102] This brain function improvement facilitating program can easily facilitate improvement of brain function appropriate for the user.

[0103] A recording medium according to the present disclosure is a computer-readable recording medium for use in a brain function improvement facilitating system that facilitates improvement of brain function of a user and includes a measurement sensor attachable to a body of the user and including a brain function improvement contribution exercise intensity measurement unit that measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user, and a terminal device including a storage that stores data, a display screen that displays data, and a timer that measures a time, the terminal device being communicable with the measurement sensor, and the recording medium causes the terminal device to function as: a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit; a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator; a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit; a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity; a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit; a storage controller that controls the storage to store information indicating that the duration time has reached the target time if the second determiner determines that the duration time has reached the target time; a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time; and a display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator.

[0104] This storage medium can easily facilitate improvement of brain function appropriate for the user.

[0105] It should be understood that the embodiments disclosed here are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the claims rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the claims. Description of Reference Characters

[0106] 11 brain function improvement facilitating device, 12, 63 display screen, 13 band, 14 button, 21 controller, 22 storage memory, 23, 56 oxygen intake amount measurement unit, 24 communication unit, 25, 64 timer, 31,71 target oxygen intake amount calculator, 32, 72 setting unit, 33, 73 first determiner, 34, 74 duration time measurement controller, 35, 75 second determiner, 36, 76 storage controller, 37, 77 display data generator, 38, 78 display controller, 41, 42, 43 display data, 51 brain function improvement facilitating system, 52 measurement sensor, 53 terminal device, 54 measurement sensor communication unit, 55 measurement sensor controller, 57 measurement sensor memory, 61 terminal device communication unit, 62 terminal device controller, 65 terminal device memory, 8la,8lb region data, 82a, 82b graph data, 83a, 83b icon data.

Claims

1. A brain function improvement facilitating device that is attachable to a body of a user and facilitates improvement of brain function of the user, the device comprising:a storage that stores data;a display screen that displays data;a timer that measures a time;a brain function improvement contribution exercise intensity measurement unit that measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user;a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit;a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator;a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit;a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity;a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit;a storage controller that controls the storage to store information indicating that the total of the duration time has reached the target time if the second determiner determines that the total of the duration time has reached the target time;a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time; anda display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator.

2. The brain function improvement facilitating device according to claim 1, whereinif the second determiner does not determine that the duration time has reached the target time, the second determiner determines whether the duration time has reached a first set time shorter than the target time,if the second determiner determines that the duration time has reached the first set time, the storage controller controls the storage to store information indicating that the duration time has reached the first set time, andif the second determiner determines that the duration time has reached the first set time, the display data generator generates display data to be displayed on the display screen based on reaching the first set time.

3. The brain function improvement facilitating device according to claim 2, wherein if the second determiner determines that the duration time has reached the first set time, the storage controller controls the storage to store data of the duration time.

4. The brain function improvement facilitating device according to claim 1or 2, wherein the brain function improvement includes at least one of suppression of progress of dementia, suppression of atrophy of brain morphology including a negative change in brain morphology, or improvement of a brain health score.

5. The brain function improvement facilitating device according to claim 1 or 2, wherein if the first determiner does not determine that the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity within a certain period of the time measured by the timer from a predetermined timing, the display data generator generates display data indicating that the first determiner does not determine that the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity.

6. The brain function improvement facilitating device according to claim 1 or 2, wherein determination by the first determiner is refreshed at each predetermined timing.

7. The brain function improvement facilitating device according to claim 1 or 2, wherein the target brain function improvement contribution exercise intensity calculator calculates the target brain function improvement contribution exercise intensity using at least one of a rule-based model, a machine learning model, or a deep learning model.

8. The brain function improvement facilitating device according to claim 1 or 2, wherein the target brain function improvement contribution exercise intensity calculator calculates, as the target brain function improvement contribution exercise intensity, an optimized target brain function improvement contribution exercise intensity that is a brain function improvement contribution exercise intensity as high as possiblewhile satisfying a condition of performing an exercise continuously or without interruption.

9. The brain function improvement facilitating device according to claim 1 or 2, wherein the brain function improvement contribution exercise intensity includes at least one of an oxygen intake amount, calorie consumption, the number of steps, a rate of perceived exertion, or a repetition maximum.

10. A brain function improvement facilitating system that facilitates improvement of brain function of a user, the system comprising:a measurement sensor attachable to a body of the user and including a brain function improvement contribution exercise intensity measurement unit that measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user; and a terminal device communicable with the measurement sensor, whereinthe terminal device includesa storage that stores data,a display screen that displays data,a timer that measures a time,a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit,a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator,a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain functionimprovement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit,a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity,a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit,a storage controller that controls the storage to store information indicating that the duration time has reached the target time if the second determiner determines that the duration time has reached the target time,a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time, anda display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator.

11. A brain function improvement facilitating method for facilitating improvement of brain function of a user, the method comprising:measuring a brain function improvement contribution exercise intensity that is an exercise intensity contributing to brain function improvement of the user over time;calculating a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit;setting the calculated target brain function improvement contribution exercise intensity and target time;determining whether the measured brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity;performing control to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if it is determined that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity;determining whether a total of the duration time measured within the predetermined time limit has reached the target time;performing control to store information indicating that the duration time has reached the target time if it is determined that the duration time has reached the target time;generating display data to be displayed based on reaching the target time if it is determined that the total of the duration time has reached the target time; andperforming control to display at least one of the calculated target brain function improvement contribution exercise intensity, actual related data and time, or the generated display data.

12. A brain function improvement facilitating program for use in a brain function improvement facilitating system that facilitates improvement of brain function of a user, the system including a measurement sensor that is attachable to a body of the user and measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user, and a terminal device including a storage that stores data, a display screen that displays data, and a timer that measures a time, the terminal device being communicable with the measurement sensor, the program causing the terminal device to function as:calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit;a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator;a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit;a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity;a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit;a storage controller that controls the storage to store information indicating that the duration time has reached the target time if the second determiner determines that the duration time has reached the target time;a display data generator that generates display data to be displayed on the display screen based on reaching the target time if the second determiner determines that the total of the duration time has reached the target time; anda display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data and time, or the display data generated by the display data generator.

13. A computer-readable recording medium for use in a brain function improvement facilitating system that facilitates improvement of brain function of a user and includes a measurement sensor attachable to a body of the user and including a brain function improvement contribution exercise intensity measurement unit that measures a brain function improvement contribution exercise intensity over time, the brain function improvement contribution exercise intensity being an exercise intensity contributing to brain function improvement of the user, and a terminal device including a storage that stores data, a display screen that displays data, and a timer that measures a time, the terminal device being communicable with the measurement sensor, the recording medium causing the terminal device to function as:a target brain function improvement contribution exercise intensity calculator that calculates a target brain function improvement contribution exercise intensity and a target time, the target brain function improvement contribution exercise intensity being set as a target exercise intensity necessary for facilitating brain function improvement for the user, the target time being to be reached within a predetermined time limit;a setting unit that sets the target brain function improvement contribution exercise intensity and the target time calculated by the target brain function improvement contribution exercise intensity calculator;a first determiner that determines whether the brain function improvement contribution exercise intensity of the user measured by the brain function improvement contribution exercise intensity measurement unit is greater than or equal to the target brain function improvement contribution exercise intensity set by the setting unit;a duration time measurement controller that controls the timer to measure a duration time in which the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity if the first determiner determines that the brain function improvement contribution exercise intensity of the user is greater than or equal to the target brain function improvement contribution exercise intensity;a second determiner that determines whether a total of the duration time measured within the predetermined time limit has reached the target time set by the setting unit;a storage controller that controls the storage to store information indicating that the duration time has reached the target time if the second determiner determines that the duration time has reached the target time;a display data generator that generates display data to be displayed on the display5 screen based on reaching the target time if the second determiner determines that the totalof the duration time has reached the target time; anda display controller that controls the display screen to display at least one of the target brain function improvement contribution exercise intensity calculated by the target brain function improvement contribution exercise intensity calculator, actual related data 10 and time, or the display data generated by the display data generator.

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