Brain function improvement promotion device, brain function improvement promotion system, brain function improvement promotion method, brain function improvement promotion program, and recording medium

Abstract

To provide a brain function improvement promotion device, system, method, and program, and a recording medium that easily facilitate an improvement of a brain function appropriate for a user.SOLUTION: A brain function improvement promotion device includes: a first determination unit that determines whether a user's heart rate has reached or exceeded a target heart rate set by a setting unit; a duration measurement control unit that controls a duration during which the user's heart rate reaches or exceeds the target heart rate; a second determination unit that determines whether the total duration measured within a predetermined period has reached a target time set by the setting unit; a storage control unit that, when the second determination unit determines that the total duration has reached the target time, causes a storage unit to store the fact that the duration time has reached the target time; a display data generation unit that, when the second determination unit determines that the duration has reached the target time, generates display data for displaying, on a display screen, data based on the fact that the target time has been reached; and a display control unit that displays the display data, the calculated target heart rate, and actual related data and time.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a brain function improvement promotion device, a brain function improvement promotion system, a brain function improvement promotion method, a brain function improvement promotion program, and a recording medium. [Background technology]

[0002] A program for improving cognitive function has been disclosed (for example, see Patent Document 1). According to Patent Document 1, a head-mounted display worn by a user displays a viewpoint image of a virtual body of the user exercising in a virtual reality space at a second exercise intensity lower than a first exercise intensity. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-81864 Summary of the Invention [Problem to be solved by the invention]

[0004] Recently, it has been recognized that it is good to exercise at a certain intensity to suppress or improve the decline of brain function, such as suppressing or improving the progression of dementia. However, ordinary users do not know what kind of exercise they should do to suppress or improve their own brain function, and as a result, the exercise that the user performs on his or her own for the purpose of suppressing or improving the decline of brain function may be insufficient or inappropriate. In addition, since the user is not sure whether it is appropriate, there is a risk that the user will stop exercising continuously. Such a situation is not good for users who want to suppress or improve the decline of brain function.

[0005] Therefore, one of the objectives of the present disclosure is to provide a brain function improvement promotion device that can easily promote the inhibition of decline and improvement of brain function appropriate for the user. This brain function improvement promotion device can also be used for the purpose of inhibiting the progression and improving dementia. [Means for solving the problem]

[0006] A brain function improvement promotion device according to the present disclosure is a brain function improvement promotion device that can be worn on a user's body and promotes improvement of the user's brain function. The brain function improvement promotion device includes a storage unit that stores data, a display screen that displays data, a time measurement unit that measures time, a heart rate measurement unit that measures the user's heart rate over time, a target exercise intensity calculation unit that calculates a target heart rate set as a target exercise intensity necessary for promoting improvement of the user's brain function and a target time to be reached within a predetermined time limit, a setting unit that sets the target heart rate and target time calculated by the target exercise intensity calculation unit, a first judgment unit that judges whether the user's heart rate measured by the heart rate measurement unit is equal to or higher than the target heart rate set by the setting unit, and if the first judgment unit judges that the user's heart rate is equal to or higher than the target heart rate, a time measurement unit that measures the duration during which the heart rate is equal to or higher than the target heart rate. a duration measurement control unit that controls the memory unit to store information indicating that the duration has reached the target time if the second judgment unit judges that the duration has reached the target time; a display data generation unit that generates display data for displaying data based on the reaching of the target time on a display screen if the second judgment unit judges that the total duration has reached the target time; and a display control unit that controls the display screen to display at least one of the target heart rate, actual related data and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit. Effect of the Invention

[0007] According to the brain function improvement promotion device, it is possible to easily promote improvement of brain function appropriate for the user. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating an outline of the appearance of a brain function improvement promotion device according to the first embodiment. [Diagram 2] FIG. 2 is a block diagram showing the configuration of the brain function improvement promotion device shown in FIG. [Diagram 3] FIG. 3 is a flow chart showing typical steps for calculating and setting a target exercise intensity. [Figure 4] FIG. 4 is a flowchart showing typical steps for promoting improvement of brain function using the brain function improvement promotion device according to the first embodiment. [Diagram 5] FIG. 5 is a schematic diagram showing an example of display data displayed on the display screen. [Figure 6] FIG. 6 is a block diagram showing a brain function improvement promotion system according to the second embodiment. [Figure 7] FIG. 7 is a schematic diagram showing an example of display data displayed on the display screen. [Figure 8] FIG. 8 is a schematic diagram showing an example of display data displayed on the display screen. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described. The brain function improvement promotion device according to the present disclosure is a brain function improvement promotion device that can be worn on the body of a user and promotes improvement of the user's brain function. The brain function improvement promotion device includes a storage unit that stores data, a display screen that displays data, a time measurement unit that measures time, a heart rate measurement unit that measures the user's heart rate over time, a target exercise intensity calculation unit that calculates a target heart rate that is set as a target exercise intensity necessary for promoting improvement of the user's brain function and a target time that should be reached within a predetermined time limit, a setting unit that sets the target heart rate and target time calculated by the target exercise intensity calculation unit, a first judgment unit that judges whether the user's heart rate measured by the heart rate measurement unit is equal to or higher than the target heart rate set by the setting unit, and if the first judgment unit judges that the user's heart rate is equal to or higher than the target heart rate, a time measurement unit measures the duration during which the heart rate is equal to or higher than the target heart rate. a duration measurement control unit that controls the memory unit to store information indicating that the duration has reached the target time if the second judgment unit judges that the duration has reached the target time; a display data generation unit that generates display data for displaying data based on the reaching of the target time on a display screen if the second judgment unit judges that the total duration has reached the target time; and a display control unit that controls the display screen to display at least one of the target heart rate, actual related data and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit.

[0010] The present inventors have focused on the fact that exercise of a certain intensity is effective for suppressing the decline of a user's brain function or improving the user's brain function, including suppressing the progression of dementia or improving dementia. The user then tries to exercise for a long time, such as running, in order to improve brain function. Here, running is taken as an example of exercise of a certain intensity. Aerobic exercise such as monotonous running is relatively hard exercise, and it is often difficult to continue. In fact, the present inventors have considered that even if the running is not performed at such a high intensity, it is often effective for suppressing the decline of brain function or improving brain function, as long as it is performed continuously. Therefore, when performing exercise, it is considered important to clarify the target exercise intensity that is necessary or desirable for suppressing the decline of brain function or improving brain function. In this specification, from the viewpoint of facilitating explanation, suppression of decline of brain function is included in the concept of improving brain function. Here, the present inventors have focused on the fact that even if the user does not consciously perform hard exercise such as running, there is exercise that meets such a target exercise intensity in everyday life. We further focused on the fact that exercise that meets this target exercise intensity may be performed, for example, when walking a dog, walking briskly on the way to work, or walking up stairs, etc. We thought that by making the user aware that brain function is improved by this exercise in everyday life (regardless of whether it is so-called aerobic exercise or anaerobic exercise), we could have the user continue to perform exercise that meets the target exercise intensity, whether they are consciously exercising to improve brain function, exercising for other purposes such as maintaining or improving health, or even in everyday life without any special awareness, and as a result, we could effectively promote the improvement of brain function.

[0011] The inventors further considered the following. Exercise that satisfies the target exercise intensity necessary or desirable for the user to promote brain function improvement is a balance between the target heart rate and the target time. That is, the target heart rate can be set with a certain degree of latitude while being set according to the attributes of the user, and it is said that the higher the target heart rate, the more effective it is for promoting brain function improvement. On the other hand, the higher the target heart rate, the harder the exercise, so that depending on the user, it may be difficult to perform it continuously or without interruption. If it becomes difficult to perform it continuously or without interruption, or in some cases, it may not be continued, not only will the effect of improving brain function be reduced, but it may become completely meaningless.

[0012] According to the brain function improvement promotion device, the brain function improvement promotion device attached to the user's body measures the user's heart rate over time, measures the duration when the heart rate is equal to or greater than the target heart rate, and if the target time to be reached within a specified time limit is reached, displays that fact on the display screen. In addition, by starting the brain function improvement promotion device, the target heart rate and target time set as the target exercise intensity required or desirable for the user to promote brain function improvement can be calculated, and the target exercise intensity can be displayed on the display screen. In this way, it is possible to visually confirm on the display screen that exercise of a certain exercise intensity that leads to improvement of brain function has been performed in everyday life. Therefore, it is possible to realize that exercise of a certain exercise intensity that leads to improvement of brain function has been performed without difficulty in everyday life. In other words, even if the user does not actively go to a sports gym or the like to perform a certain exercise such as running, he or she can realize that he or she is performing exercise of a certain exercise intensity that leads to improvement of brain function. Of course, the brain function improvement promotion device is utilized whether the user consciously exercises to improve brain function or exercises to maintain or improve other health. Specifically, when performing such exercise, in order to clarify the target exercise intensity necessary or desirable for promoting brain function improvement, the target heart rate and target time can be calculated and the target exercise intensity can be displayed on the display screen. This allows the user to continuously perform exercise that leads to improvement of brain function without having to perform excessively hard exercise. In addition, since the display screen allows the user to understand that he or she has performed a certain exercise that is effective for improving brain function, the user can strive to perform exercise that meets the target exercise intensity even in everyday life without any special awareness, which can lead to the promotion of improvement of brain function. As described above, such a brain function improvement promotion device can easily promote improvement of brain function appropriate for the user.

[0013] In the brain function improvement promotion device, the second judgment unit may judge whether the duration has reached a first set time that is shorter than the target time if it is not judged that the duration has reached the target time. The memory control unit may control the memory unit to store the fact that the first set time has been reached if the second judgment unit judges that the duration has reached the first set time. The display data generation unit may generate display data that displays data based on the reaching of the first set time on the display screen if the second judgment unit judges that the duration has reached the first set time. In this way, if the duration has reached the first set time even if it does not reach the target time, the user can easily visually recognize that fact. Therefore, it is possible to promote the improvement of brain function by making an effort to continue or uninterruptedly perform a similar certain exercise in daily life so as to approach the target time.

[0014] In the brain function improvement promotion device, the memory control unit may control the memory unit to store the data of the duration when the second judgment unit judges that the duration has reached the first set time. By doing so, even if the duration does not reach the target time, the duration is added up and displayed, etc., so that it is possible to visually appeal to the user that an effective exercise that leads to the improvement of brain function has been performed. Therefore, it is possible to promote the improvement of brain function through exercise within a specified time period.

[0015] In the brain function improvement and promotion device, the improvement of brain function may include at least one of suppressing the progression of dementia, suppressing brain atrophy including negative changes in brain morphology, and improving brain health score. The above-mentioned certain exercise is very effective in suppressing the progression of dementia, suppressing brain morphological atrophy including negative changes in brain morphology, and improving brain health score.

[0016] In the brain function improvement promotion device, the display data generating unit may generate display data to display that fact if the first determining unit does not determine that the user's heart rate measured by the heart rate measuring unit is equal to or higher than the target heart rate within a certain period of time from a predetermined timing measured by the time measuring unit. By doing so, it is possible to visually appeal to the user that they have not performed an exercise that will result in a heart rate equal to or higher than the target heart rate for a certain period of time. Therefore, it is possible to encourage the user to perform an exercise that will result in a heart rate equal to or higher than the target heart rate in their daily life.

[0017] In the brain function improvement promotion device, the judgment by the first judgment unit may be refreshed at a predetermined timing. In this way, it is possible to effectively promote repeated constant exercise over a short period such as one week or a long period such as several months.

[0018] In the brain function improvement promotion device, the target exercise intensity calculation unit may calculate the target heart rate using at least one of the methods of the rule-based model, the machine learning model, and the deep learning model. In this way, a target heart rate that is more meaningful to the user can be calculated, and an improvement in brain function that is more appropriate for the user can be easily promoted. In this case, the calculation may be performed using one of the methods of the rule-based model, the machine learning model, and the deep learning model, or the target heart rate may be calculated using a method that combines the rule-based model and the machine learning model, a method that combines the rule-based model and the deep learning model, or a method that combines the machine learning model and the deep learning model, or the target heart rate may be calculated using a method that combines the rule-based model, the machine learning model, and the deep learning model. Of course, the target heart rate may be calculated using a method that combines one of the rule-based model, the machine learning model, and the deep learning model with one or more other methods.

[0019] In the brain function improvement promotion device, the target exercise intensity calculation unit may calculate, as the target heart rate, an optimized target heart rate that is the highest heart rate possible while satisfying the condition of performing exercise continuously or without interruption.

[0020] In order to maximize the effect of improving brain function for the user, it is useful to set the target heart rate as high as possible while satisfying the condition of performing exercise continuously or without interruption. Setting such a target heart rate varies for each individual depending on factors such as the user's age, sex, exercise experience (which may be short-term, medium-term, or long-term), physical ability, motivation, etc.

[0021] Therefore, the inventors have found that "setting the highest possible target heart rate while satisfying the condition of performing exercise continuously or without interruption" is effective in maximizing the effect of improving brain function, and have devised a method for determining the target heart rate suitable for each individual user based on factors such as the user's age, sex, exercise experience, physical ability, motivation, etc. These are applied to the brain function improvement promotion device, and also to the brain function improvement promotion system, brain function improvement promotion method, brain function improvement promotion program, and recording medium, all of which will be described later.

[0022] This "highest possible target heart rate while still satisfying the condition of continuous or uninterrupted exercise" is defined as the "optimized target heart rate."

[0023] The optimized target heart rate of a user is calculated by a target exercise intensity calculation unit by inputting qualitative or quantitative information including the following (1) and (2).

[0024] (1) Information obtained by the target exercise intensity calculation unit is: (a) the user's target heart rate. (2) The information obtained by the user's input is (a) the target time for exercising if the user is going to exercise, and (b) the user's goal or preference level for the exercise intensity of that exercise (hereinafter referred to as "user preference level", sometimes expressed as "Pi").

[0025] The user preference (Pi) may be presented by the target exercise intensity calculation unit as a plurality of options of objective numerical values ​​(for example, a percentage such as "80%" for exercising at full strength). Alternatively, the user preference (Pi) may be a method in which the user selects from a plurality of subjective options (for example, five levels such as maximum, high, medium, low, and easy). In this case, the target exercise intensity calculation unit converts the subjective options into an appropriate objective numerical value using a predetermined formula.

[0026] Information other than the information in (1) and (2) may be input as information for calculating the optimized target heart rate. For example, the user's age or sex may be input from the target exercise intensity calculation unit, the user's sleep time last night and other health care data may be input from the device, or the user may input evaluation information regarding today's physical condition.

[0027] The optimized target heart rate is a heart rate that satisfies all of the following (3), (4), and (5).

[0028] (3) The heart rate must be at or above the level required to promote improved brain function for the user. (4) The heart rate must be such that one can exercise while maintaining a constant heart rate for a duration (expressed as X minutes, for example, 35 minutes). This "constant" is a concept with a certain degree of flexibility, and can refer, for example, to maintaining a heart rate within the range of 95% to 105% of the heart rate set as the optimized target heart rate. For example, if the optimized target heart rate is 80, a heart rate between 76 and 84 is considered constant. (5) The heart rate is obtained by multiplying the “objective numerical value” based on the user preference (Pi) by the “exercise intensity” in the calculation formula for the “target heart rate HRt.”

[0029] As a formula model for determining the optimized target heart rate constituting the target exercise intensity calculation unit, various methods such as a rule-based model, a machine learning model, a deep learning model, etc. can be used.

[0030] In the case of the rule-based model, calculation rules for the optimized target heart rate are defined based on existing research results and knowledge in sports medicine and science, etc., and the optimized target heart rate is predicted based on these rules.

[0031] In machine learning models, methods such as support vector machines (SVM), decision trees, random forests, and K-nearest neighbor methods can be used. In deep learning models, methods such as multi-layer neural networks (MNN), recurrent neural networks (RNN), long short-term memory networks (LSTM), convolutional neural networks (CNN), and transformers can be used. These methods provide data consisting of input and output, perform supervised learning, and optimize the parameters of the model, outputting the "optimized target heart rate," which is the highest possible target heart rate while satisfying the condition of continuous or uninterrupted exercise.

[0032] The formula for calculating the optimized target heart rate, which constitutes the target exercise intensity calculation unit, is learned and modified to optimize the user's target heart rate using feedback from the user as a reward using reinforcement learning. In other words, when the user actually exercises after obtaining the optimized target heart rate, the following results can be obtained.

[0033] (6) Duration of exercise (7) Heart rate volatility around the target heart rate during exercise (8) (If available) The user's subjective evaluation of the proposed exercise intensity (target heart rate)

[0034] The formula for calculating the optimized target heart rate is not limited to a single method among the rule-based model, machine learning model, and deep learning model described above, but by combining multiple models to make predictions, it is possible to provide a more optimized output for the user.

[0035] Through the above process, the formula for calculating the optimized target heart rate, which constitutes the target exercise intensity calculation unit, continues to be learned for each user, either constantly or appropriately. This allows the original purpose of "maximizing the effect of improving brain function" to be achieved by "setting the highest possible target heart rate while satisfying the condition of continuous or uninterrupted exercise" for each user.

[0036] In addition, the learning procedures of the above learning models are all carried out based on the following concept.

[0037] (A) Prepare the i-th input, xi. (B) The input is fed to a model F(·;θ) with parameters θ, and the prediction yi = F(xi;θ) for the i-th data point is calculated. (C) Calculate the error between the prediction yi and the correct answer yi for the i-th data. (D) Update the model parameter θ based on the error. (E) Repeat steps (A) through (D) above for all training data until the model training converges on the development data.

[0038] The brain function improvement promotion system according to the present disclosure is a brain function improvement promotion system for promoting the improvement of a user's brain function, and includes a measurement sensor that can be worn on the user's body and includes a heart rate measurement unit that measures the user's heart rate over time, and a terminal device that can communicate with the measurement sensor. The terminal device includes a storage unit that stores data, a display screen that displays data, a time measurement unit that measures time, a target exercise intensity calculation unit that calculates a target heart rate set as a target exercise intensity necessary for promoting the improvement of the user's brain function and a target time to be reached within a predetermined period of time, a setting unit that sets the target heart rate and the target time calculated by the target exercise intensity calculation unit, a first judgment unit that judges whether the user's heart rate measured by the heart rate measurement unit is equal to or higher than the target heart rate set by the setting unit, and a duration measurement control unit that controls the time measurement unit to measure the duration during which the heart rate is equal to or higher than the target heart rate if the first judgment unit judges that the user's heart rate is equal to or higher than the target heart rate. the target heart rate and the actual associated data and time calculated by the target exercise intensity calculation unit, and the display control unit controls the display screen to display at least one of the target heart rate, actual associated data and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit, when the second judgment unit judges that the total duration has reached the target time, the storage control unit controls the storage unit to store information indicating that the duration has reached the target time if the second judgment unit judges that the total duration has reached the target time, the display data generation unit generates display data for displaying data based on the reaching of the target time on the display screen if the second judgment unit judges that the total duration has reached the target time, and the display control unit controls the display screen to display at least one of the target heart rate, actual associated data and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit.

[0039] According to such a brain function improvement promotion system, it is possible to easily promote improvement of brain function appropriate for the user.

[0040] The brain function improvement promotion method according to the present disclosure is a brain function improvement promotion method for promoting improvement of a user's brain function, and includes the steps of: measuring the user's heart rate over time; calculating a target heart rate set as a target exercise intensity required for promoting improvement of the user's brain function and a target time to be reached within a specified time limit; setting the calculated target heart rate and target time; determining whether the measured user's heart rate is equal to or higher than the set target heart rate; if it is determined that the user's heart rate is equal to or higher than the target heart rate, controlling to measure a duration during which the heart rate is equal to or higher than the target heart rate; determining whether the total of the durations measured within the specified time limit reaches the set target time; if it is determined that the duration has reached the target time, controlling to store that the duration has reached the target time; if it is determined that the total of the durations has reached the target time, generating display data that displays data based on the reaching of the target time; and controlling to display at least one of the calculated target heart rate, actual related data and time, and the generated display data.

[0041] According to such a method for promoting improvement of brain function, it is possible to easily promote improvement of brain function appropriate for the user.

[0042] A brain function improvement promotion program according to the present disclosure is a program for a brain function improvement promotion system for use in a brain function improvement promotion system that is wearable on a user's body and includes a measurement sensor including a heart rate measuring unit that measures the user's heart rate over time, a memory unit that stores data, a display screen that displays data, and a time measuring unit that measures time, and a terminal device that can communicate with the measurement sensor, and promotes improvement of a user's brain function, the program including the terminal device comprising a target exercise intensity calculation unit that calculates a target heart rate that is set as a target exercise intensity necessary for the user to promote improvement of brain function and a target time that should be reached within a specified time limit, a setting unit that sets the target heart rate and target time calculated by the target exercise intensity calculation unit, a first judgment unit that judges whether the user's heart rate measured by the heart rate measuring unit has reached or exceeded the target heart rate set by the setting unit, and a terminal device that judges whether the user's heart rate has reached or exceeded the target heart rate by the first judgment unit. a duration measurement control unit that controls the time measurement unit to measure a duration that is equal to or greater than the target heart rate if it is determined that the target heart rate has been reached; a second judgment unit that judges whether the total of the durations measured within a specified period of time has reached the target time set by the setting unit; a memory control unit that controls the memory unit to store information that the duration has reached the target time if the second judgment unit determines that the duration has reached the target time; a display data generation unit that generates display data that displays data based on the reaching of the target time on a display screen if the second judgment unit determines that the total of the durations has reached the target time; and a display control unit that controls the display screen to display at least one of the target heart rate, actual related data, and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit.

[0043] According to such a brain function improvement promotion program, it is possible to easily promote improvement of brain function appropriate for the user.

[0044] A storage medium according to the present disclosure is a computer-readable recording medium used in a brain function improvement promotion system that can be worn on a user's body and includes a measurement sensor including a heart rate measuring unit that measures the user's heart rate over time, a memory unit that stores data, a display screen that displays data, and a time measuring unit that measures time, and a terminal device that can communicate with the measurement sensor, and that promotes improvement of a user's brain function, the computer-readable recording medium including the terminal device, a target exercise intensity calculation unit that calculates a target heart rate that is set as a target exercise intensity necessary for promoting improvement of the user's brain function and a target time that should be reached within a specified time limit, a setting unit that sets the target heart rate and target time calculated by the target exercise intensity calculation unit, a first judgment unit that judges whether the user's heart rate measured by the heart rate measuring unit has reached or exceeded the target heart rate set by the setting unit, and if the first judgment unit judges that the user's heart rate has reached or exceeded the target heart rate, a duration measurement control unit that controls the measurement unit to measure a duration that is the time during which the heart rate is equal to or greater than the target heart rate; a second judgment unit that judges whether the total duration measured within a specified period of time has reached the target time set by the setting unit; a memory control unit that controls the memory unit to store information that the duration has reached the target time if the second judgment unit judges that the duration has reached the target time; a display data generation unit that generates display data that displays data based on the reaching of the target time on a display screen if the second judgment unit judges that the total duration has reached the target time; and a display control unit that controls the display screen to display at least one of the target heart rate, actual related data, and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit.

[0045] Such a storage medium can easily promote improvement of brain function appropriate for the user.

[0046] [Details of the embodiment of the present invention] Next, an embodiment of the brain function improvement and promotion device of the present disclosure will be described with reference to the drawings. In the following drawings, the same or corresponding parts are designated by the same reference characters, and the description thereof will not be repeated.

[0047] (Embodiment 1) The configuration of a brain function improvement promotion device according to the first embodiment of the present disclosure will be described. Fig. 1 is a diagram illustrating a schematic external view of the brain function improvement promotion device according to the first embodiment. Fig. 2 is a block diagram illustrating the configuration of the brain function improvement promotion device illustrated in Fig. 1.

[0048] 1 and 2, the brain function improvement promotion device 11 in the first embodiment is detachable from the user's body. That is, the user can attach the brain function improvement promotion device 11 in the first embodiment to his / her body and detach it. The brain function improvement promotion device 11 is, for example, a wristwatch type, and can be worn by wrapping it around the user's arm. Note that the brain function improvement promotion device 11 may be of a type other than the wristwatch type, such as a wristband type or a ring type.

[0049] The brain function improvement promotion device 11 includes a display screen 12 for displaying data, and a band 13 for wrapping around the user's arm. When the brain function improvement promotion device 11 is wrapped around the user's arm with the band 13, the display screen 12 is disposed in a position visible to the user. In addition, the brain function improvement promotion device 11 has buttons 14 for performing various settings disposed on the side of the display screen 12.

[0050] The brain function improvement promotion device 11 includes a control unit 21 that controls the brain function improvement promotion device 11 itself, a storage memory 22 as a storage unit, a heart rate measurement unit 23 that measures the user's heart rate over time, a communication unit 24 that communicates between the brain function improvement promotion device 11 and the outside, and a time measurement unit 25 that measures time. Since the brain function improvement promotion device 11 has the time measurement unit 25, it also functions as a simple clock. The heart rate measurement unit 23 measures the heart rate or pulse from the user's arm and measures the value of this heart rate or pulse as the heart rate.

[0051] The control unit 21 includes a target exercise intensity calculation unit 31, a setting unit 32, a first judgment unit 33, a duration measurement control unit 34, a second judgment unit 35, a memory control unit 36, a display data generation unit 37, and a display control unit 38. The target exercise intensity calculation unit 31 calculates a target heart rate set as a target exercise intensity necessary for the user to promote improvement of brain function and a target time to be reached within a predetermined time limit. The setting unit 32 sets the target heart rate and target time calculated by the target exercise intensity calculation unit 31. The first judgment unit 33 judges whether the user's heart rate measured by the heart rate measurement unit 23 is equal to or higher than the target heart rate set by the setting unit 32. If the first judgment unit 33 judges that the user's heart rate is equal to or higher than the target heart rate, the duration measurement control unit 34 controls the time measurement unit 25 to measure the duration during which the heart rate is equal to or higher than the target heart rate. The second determination unit 35 determines whether the total duration measured within a predetermined period of time reaches the target time set by the setting unit 32. If the second determination unit 35 determines that the duration has reached the target time, the memory control unit 36 ​​controls the memory unit to store the fact that the duration has reached the target time. If the second determination unit 35 determines that the total duration has reached the target time, the display data generation unit 37 generates display data for displaying data based on the reaching of the target time on the display screen 12. The display control unit 38 controls the display screen 12 to display at least one of the target heart rate, actual related data, and time generated by the target exercise intensity calculation unit 31, and the display data generated by the display data generation unit 37. These configurations will be described in detail later.

[0052] Next, a case where a target exercise intensity is calculated and set will be described. FIG. 3 is a flow chart showing a typical process for calculating and setting a target exercise intensity. Referring to FIG. 3, first, a user wears the brain function improvement promotion device 11 on his / her arm. Then, the user maintains a resting state, that is, a state where the user is not exercising. Here, by pressing a switch or the like, the brain function improvement promotion device 11 starts measuring the heart rate at rest (step S11 in FIG. 3, hereinafter, "step" is omitted). After a predetermined time has elapsed, the measurement of the heart rate at rest is ended (S12). Then, the target exercise intensity calculation unit 31 calculates a target heart rate and a target time (S13).

[0053] Here, an example of the target heart rate is as follows. First, the heart rate at rest is measured by the heart rate measuring unit 23. The resting heart rate refers to the heart rate when the user is not exercising. The resting heart rate may be acquired by input from the user. The resting heart rate differs from user to user. Then, the value calculated by the following formula becomes the target heart rate HRt.

[0054] Target heart rate HRt = exercise intensity x (maximum heart rate - resting heart rate) + resting heart rate

[0055] The maximum heart rate refers to the maximum heart rate that can be achieved in one minute. The maximum heart rate may be derived using, for example, any of the following formulas, or may be obtained by inputting a numerical value from the user or by obtaining the largest heart rate actually measured within a specified period of time.

[0056] Maximum heart rate = 220 - age Maximum heart rate = 210 - 0.5 x age Maximum heart rate = 208 - 0.7 x age

[0057] Here, the exercise intensity is a numerical value set by the user and is expressed as a percentage, for example, 50% or 60%. That is, the target heart rate is a value between the maximum heart rate and the resting heart rate.

[0058] The target time to be reached within a certain time limit is set to, for example, 120 minutes or 150 minutes per week. It is not necessary to achieve this in one exercise, but rather, it is often desirable to achieve it continuously in a balanced manner throughout the week. In this case, the duration that reaches the predetermined set time is accumulated over multiple times, thereby reaching the target time such as 120 minutes or 150 minutes. For this set time, one type of set time of 60 minutes may be prepared as a single set time for the purpose of improving brain function. For example, if exercise of more than 60 minutes is performed twice in a week, the accumulated exercise time will be 120 minutes, and the target time for one week of 120 minutes will be achieved after satisfying the conditions. For this set time, two types of set times of 30 minutes as a first set time and 5 minutes as a second set time may be prepared for the purpose of improving brain function. For example, if 30 minutes of exercise is performed twice in one week (reaching the second set time and the first set time) and 5 minutes of exercise is performed 12 times (reaching the second set time but not reaching the first set time) in one week, the total amount of exercise is 120 minutes, and the weekly target time of 120 minutes is achieved while satisfying the conditions. The target heart rate and target time set as the target exercise intensity may be displayed on a display screen described later.

[0059] The target exercise intensity calculation unit 31 may calculate an optimized target heart rate, which is the highest possible target heart rate while satisfying the condition that the exercise is performed continuously or uninterrupted, as the target heart rate. That is, the target exercise intensity calculation unit 31 may calculate an optimized target heart rate, which is the highest possible heart rate while satisfying the condition that the exercise is performed continuously or uninterrupted, as the target heart rate. This calculation may be performed using at least one of the above-mentioned rule-based model, machine learning model, and deep learning model.

[0060] Thereafter, the target heart rate and the target time are set by the setting unit 32 .

[0061] Next, the operation of such brain function improvement promotion device 11 in a situation where a target exercise intensity is set will be described. Fig. 4 is a flow chart showing a typical process for promoting improvement of brain function using brain function improvement promotion device 11 in embodiment 1. As the set time, for the purpose of improving brain function, one type of 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, a first set time and a second set time, are set.

[0062] With reference to FIG. 4, when a user wears the brain function improvement promotion device 11 on his / her arm, a heart rate measuring unit 23 included in the brain function improvement promotion device 11 detects the user's heart rate. Then, the heart rate measuring unit 23 measures the user's heart rate over time (S21). That is, the heart rate measuring unit 23 starts measuring the user's heart rate over time. In this case, the heart rate measuring unit 23 may start measuring the user's heart rate by detecting pressing of a button 14 provided in the brain function improvement promotion device 11. In addition, the brain function improvement promotion device 11 may include a mechanism for detecting body temperature, and if this mechanism detects body temperature when worn by the user, the heart rate measuring unit 23 may start measuring the heart rate.

[0063] After starting to measure the heart rate, the user goes about his or her daily life while wearing the brain function improvement promotion device 11 on the arm. In this case, for example, the user walks the dog, or does exercises that move the user's body, such as housework or gardening. Note that this normal exercise does not include running or swimming, which the user considers to be aerobic exercise. For example, the user walks the dog and continues walking with the dog for a long time. The first determination unit 33 determines whether the user's heart rate measured by the heart rate measurement unit 23 is equal to or higher than the target heart rate set for each user (S22).

[0064] If the first judgment unit 33 judges that the user's heart rate is equal to or higher than the target heart rate (YES in S22), the duration measurement control unit 34 controls the time measurement unit 25 to measure the duration during which the heart rate is equal to or higher than the target heart rate (S23).

[0065] Then, the user continues to walk the dog. Then, the heart rate continues to be equal to or higher than the target heart rate. Here, the second judgment unit 35 judges whether the measured duration has reached a predetermined second set time (S24). The second set time is a certain continuous time that is considered to be the minimum effective for improving brain function, and a value such as 5 minutes (300 seconds) is selected. The second set time is shorter than the first set time described later.

[0066] If the second determination unit 35 determines that the duration has reached the second set time, the measurement of the heart rate continues thereafter. The user continues walking the dog.

[0067] Then, the second judgment unit 35 judges whether the duration reaches a first set time that is longer than the second set time (S25). The first set time is a period of time that is recognized as a certain exercise that is effective for improving brain function in a series of continuous exercises, and a value such as 30 minutes (1800 seconds) is selected.

[0068] If the second judgment unit 35 judges that the duration has reached the first set time (YES in S25), the second judgment unit 35 judges whether the total duration measured within the specified time limit has reached the target time (S26). In this case, if the second judgment unit 35 judges that the total duration measured within the specified time limit has reached the target time (YES in S26), it controls the storage memory 22 to store the fact that the target time has been reached (S27).

[0069] Thereafter, the display data generating unit 37 generates display data for displaying on the display screen 12 a message indicating that the total duration has reached the target time according to the second determination unit 35 (S28). Then, the display control unit 38 controls the display data generated by the display data generating unit 37 to be displayed on the display screen 12 (S29).

[0070] Fig. 5 is a schematic diagram showing an example of display data displayed on the display screen 12. Referring to Fig. 5, the display screen 12 displays display data 41 of duration, which is the time during which a heart rate equal to or higher than a target heart rate was measured, display data 42 of the heart rate, which is the average value of the measured heart rates, and display data 43 of the word "wonderful", which is a compliment for reaching the target time. When the user comes back from walking his dog, he can visually check the display data 41, 42, and 43 visualized on the display screen 12.

[0071] According to the brain function improvement promotion device 11 of the present disclosure, the brain function improvement promotion device 11 worn on the user's body measures the user's heart rate over time, measures the duration when the heart rate is equal to or greater than the target heart rate, and if the target time to be reached within a predetermined time limit is reached, displays the fact on the display screen 12. In addition, by starting the brain function improvement promotion device 11, the target heart rate and target time set as the target exercise intensity required or desirable for the user to promote brain function improvement can be calculated, and the target exercise intensity can be displayed on the display screen 12. In this way, it is possible to visually confirm on the display screen 12 that exercise of a certain exercise intensity that leads to improvement of brain function has been performed in everyday life. Therefore, it is possible to realize that exercise of a certain exercise intensity that leads to improvement of brain function has been performed without difficulty in everyday life. In other words, even if the user does not actively go to a sports gym or the like to perform a certain exercise such as running, he or she can realize that he or she is performing exercise of a certain exercise intensity that leads to improvement of brain function. Of course, the brain function improvement promotion device 11 is utilized whether the user consciously exercises to improve brain function or exercises to maintain or improve other health. Specifically, when performing such an exercise, in order to clarify the target exercise intensity necessary or desirable for promoting brain function improvement, the target heart rate and target time can be calculated and the target exercise intensity can be displayed on the display screen 12. This allows the user to continuously perform exercise that leads to improvement of brain function without having to perform excessively hard exercise. In addition, since the display on the display screen 12 allows the user to understand that a certain exercise effective for improving brain function has been performed, the user can strive to perform exercise that meets the target exercise intensity even in everyday life without any special awareness, which can lead to promotion of improvement of brain function. As described above, such a brain function improvement promotion device 11 can easily promote improvement of brain function appropriate for the user.

[0072] In S24, if the second judgment unit 35 does not judge that the duration has reached the second set time (NO in S24), the process returns to S22 to judge whether the measured heart rate is equal to or higher than the target heart rate. In S25, if the second judgment unit 35 does not judge that the duration has reached the first set time (NO in S25), the memory control unit 36 ​​controls the memory 22 to store the information indicating that the second set time has been reached and the duration data (S30). In this case, the total duration may be displayed. Then, the second judgment unit 35 judges whether the total duration within a predetermined period has reached the target time (S31). If it is not judged that the target time has been reached (NO in S31), the process returns to S22 to judge whether the measured heart rate is equal to or higher than the target heart rate. On the other hand, if it is judged that the target time has been reached (YES in S31), the memory control unit 36 ​​controls the memory 22 to store the information indicating that the target time has been reached (S27). Thereafter, the display data control unit 37 generates display data for displaying on the display screen 12 a message indicating that the total duration has reached the target time according to the second determination unit 35 (S28). Then, the display control unit 38 controls the display data generated by the display data generation unit 37 to be displayed on the display screen 12 (S29).

[0073] Furthermore, if the second judgment unit 35 does not judge in S26 that the total duration has reached the target time (NO in S26), the memory control unit 36 ​​controls the memory 22 to store the information indicating that the first set time has been reached and the data on the duration (S32). In this case, the total duration may be displayed. Similarly, the second judgment unit 35 judges whether the total duration in a predetermined period has reached the target time (S31). If it is not judged that the target time has been reached (NO in S31), the process returns to S22 to judge whether the measured heart rate is equal to or higher than the target heart rate. On the other hand, if it is judged that the target time has been reached (YES in S31), the memory control unit 36 ​​controls the memory 22 to store the information indicating that the target time has been reached (S27). The subsequent processes S28 and S29 are the same as those described above.

[0074] By doing this, even if the duration does not reach the target time, if the first set time is reached, the user can easily visually recognize that fact. Therefore, it is possible to promote the improvement of brain function by trying to continue or uninterruptedly perform a similar constant exercise in daily life so as to approach the target time. The same applies to the second set time.

[0075] In addition, by doing this, even if the duration does not reach the target time, the duration can be added up and displayed, etc., so that it is possible to visually appeal to the user that an effective exercise that leads to improvement of brain function has been performed. Therefore, it is possible to promote the improvement of brain function through exercise within a specified period of time.

[0076] In addition, such a routine is performed every predetermined time period, for example, once a week. For example, the target time is 120 minutes, and the set time is divided into two types, the first set time is 30 minutes, and the second set time is 5 minutes. If the first set time of 30 minutes is conditioned to be achieved at least twice a week, the display screen is prompted to display at least two 30-minute x 2 exercises per week, totaling 120 minutes of exercise. In this case, 30 minutes x 4 = 120 minutes may be used, or 30 minutes x 2 plus 5 minutes x 12 exercises, which is the second set time, may be added to make a total of 120 minutes of exercise. Also, if a 90-minute exercise is performed once beyond the first set time, one first set time, i.e., one 30-minute exercise, may be added within that week to make a total of 120 minutes for the week.

[0077] (Embodiment 2) Next, another embodiment, embodiment 2, will be described. Fig. 6 is a block diagram showing a brain function improvement promotion system according to embodiment 2. The brain function improvement promotion system according to embodiment 2 differs from the brain function improvement promotion device 11 according to embodiment 1 in that the brain function improvement promotion system according to embodiment 2 includes a measurement sensor that measures a heart rate and a terminal device.

[0078] 6, the brain function improvement promotion system 51 is a brain function improvement promotion system that promotes the improvement of the brain function of a user. The brain function improvement promotion system 51 includes a measurement sensor 52 that can be worn on the user's body and measures the user's heart rate over time, and a terminal device 53 that can communicate with the measurement sensor 52. The measurement sensor 52 includes a measurement sensor communication unit 54 that communicates with the outside, a measurement sensor control unit 55 that controls the measurement sensor 52 itself, a heart rate measurement unit 56 that measures the heart rate, and a measurement sensor memory 57 as a storage unit. The terminal device 53 includes a terminal device communication unit 61 that communicates with the outside, a terminal device control unit 62 that controls the terminal device 53 itself, a display screen 63, a time measurement unit 64 that measures time, and a terminal device memory 65 as a storage unit that stores data. The terminal device control unit 62 includes a target exercise intensity calculation unit 71 that calculates a target heart rate that is set as a target exercise intensity necessary for the user to promote improvement of brain function and a target time that should be reached within a specified time limit; a setting unit 72 that sets the target heart rate and target time calculated by the target exercise intensity calculation unit 71; a first judgment unit 73 that judges whether the user's heart rate measured by the heart rate measurement unit 56 has become equal to or higher than the target heart rate set by the setting unit 72; a duration measurement control unit 74 that, if the first judgment unit 73 judges that the user's heart rate has become equal to or higher than the target heart rate, controls the time measurement unit 64 to measure a duration that is a time during which the heart rate is equal to or higher than the target heart rate; and a duration measurement control unit 74 that controls the time measurement unit 64 to measure a duration during which the heart rate is equal to or higher than the target heart rate. a second judgment unit 75 that judges whether the total of the durations reaches the target time set by the setting unit 72; a storage control unit 76 that, if the second judgment unit 75 judges that the durations have reached the target time, controls the terminal device memory 65 to store information that the durations have reached the target time; a display data generation unit 77 that, if the second judgment unit 75 judges that the total of the durations has reached the target time, generates display data for displaying data based on the reaching of the target time on the display screen 63; and a display control unit 78 that controls at least one of the target heart rate, actual related data and time calculated by the target exercise intensity calculation unit 71, and the display data generated by the display data generation unit 77 to be displayed on the display screen.

[0079] 7 and 8 are schematic diagrams showing an example of display data displayed on the display screen 63. First, referring to FIG. 7, the display screen 63 displays area data 81a visually showing the size of the hippocampus as the size of a circle, graph data 82a showing the exercise intensity reached corresponding to the day of the week, and icon data 83a for operation, in addition to various data displays. The user can visually recognize the size of the circle of the area data 81a shown in FIG. 7, in particular, to increase the motivation to work hard at exercise. Also, referring to FIG. 8, the display screen 63 displays area data 81b visually showing the size of the hippocampus as the size of a circle, graph data 82b showing the exercise intensity reached corresponding to the day of the week, and icon data 83b for operation, in addition to various data displays. The user can visually recognize the smallness of the circle of the area data 81b shown in FIG. 8, in particular, to increase the motivation to work hard at exercise.

[0080] According to such brain function improvement promotion system 51, it is possible to easily promote improvement of brain function appropriate for the user.

[0081] (Other embodiments) In the above embodiment, the display data generating unit may generate display data to display that fact if the first determining unit does not determine that the user's heart rate measured by the heart rate measuring unit is equal to or higher than the target heart rate within a certain period of time from a predetermined timing measured by the time measuring unit. In this way, it is possible to visually appeal to the user that they have not performed exercise that will result in a heart rate equal to or higher than the target heart rate for a certain period of time. Therefore, it is possible to encourage the user to perform aerobic exercise that will result in a heart rate equal to or higher than the target heart rate in their daily lives.

[0082] In the above embodiment, the determination by the first determination unit may be refreshed at a predetermined timing, which can effectively promote repeated, consistent aerobic exercise over a short period such as one week or a long period such as several months.

[0083] In the above embodiment, the improvement of brain function may include at least one of the following: suppression of the progression of dementia, suppression of brain atrophy, and improvement of brain health score. The above-mentioned certain aerobic exercise is very effective in suppressing the progression of dementia, suppressing brain atrophy, and improving brain health score.

[0084] The brain function improvement promotion method according to the present disclosure is a brain function improvement promotion method for promoting improvement of a user's brain function, and includes the steps of: measuring the user's heart rate over time; calculating a target heart rate set as a target exercise intensity required for promoting improvement of the user's brain function and a target time to be reached within a specified time limit; setting the calculated target heart rate and target time; determining whether the measured user's heart rate is equal to or higher than the set target heart rate; if it is determined that the user's heart rate is equal to or higher than the target heart rate, controlling to measure a duration during which the heart rate is equal to or higher than the target heart rate; determining whether the total of the durations measured within the specified time limit reaches the set target time; if it is determined that the duration has reached the target time, controlling to store that the duration has reached the target time; if it is determined that the total of the durations has reached the target time, generating display data that displays data based on the reaching of the target time; and controlling to display at least one of the calculated target heart rate, actual related data and time, and the generated display data.

[0085] According to such a method for promoting improvement of brain function, it is possible to easily promote improvement of brain function appropriate for the user.

[0086] A brain function improvement promotion program according to the present disclosure is a program for a brain function improvement promotion system for use in a brain function improvement promotion system that is wearable on a user's body and includes a measurement sensor including a heart rate measuring unit that measures the user's heart rate over time, a memory unit that stores data, a display screen that displays data, and a time measuring unit that measures time, and a terminal device that can communicate with the measurement sensor, and promotes improvement of a user's brain function, the program including the terminal device comprising a target exercise intensity calculation unit that calculates a target heart rate that is set as a target exercise intensity necessary for the user to promote improvement of brain function and a target time that should be reached within a specified time limit, a setting unit that sets the target heart rate and target time calculated by the target exercise intensity calculation unit, a first judgment unit that judges whether the user's heart rate measured by the heart rate measuring unit has reached or exceeded the target heart rate set by the setting unit, and a terminal device that judges whether the user's heart rate has reached or exceeded the target heart rate by the first judgment unit. a duration measurement control unit that controls the time measurement unit to measure a duration that is equal to or greater than the target heart rate if it is determined that the target heart rate has been reached; a second judgment unit that judges whether the total of the durations measured within a specified period of time has reached the target time set by the setting unit; a memory control unit that controls the memory unit to store information that the duration has reached the target time if the second judgment unit determines that the duration has reached the target time; a display data generation unit that generates display data that displays data based on the reaching of the target time on a display screen if the second judgment unit determines that the total of the durations has reached the target time; and a display control unit that controls the display screen to display at least one of the target heart rate, actual related data, and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit.

[0087] According to such a brain function improvement promotion program, it is possible to easily promote improvement of brain function appropriate for the user.

[0088] A storage medium according to the present disclosure is a computer-readable recording medium used in a brain function improvement promotion system that can be worn on a user's body and includes a measurement sensor including a heart rate measuring unit that measures the user's heart rate over time, a memory unit that stores data, a display screen that displays data, and a time measuring unit that measures time, and a terminal device that can communicate with the measurement sensor, and that promotes improvement of a user's brain function, the computer-readable recording medium including the terminal device, a target exercise intensity calculation unit that calculates a target heart rate that is set as a target exercise intensity necessary for promoting improvement of the user's brain function and a target time that should be reached within a specified time limit, a setting unit that sets the target heart rate and target time calculated by the target exercise intensity calculation unit, a first judgment unit that judges whether the user's heart rate measured by the heart rate measuring unit has reached or exceeded the target heart rate set by the setting unit, and if the first judgment unit judges that the user's heart rate has reached or exceeded the target heart rate, a duration measurement control unit that controls the measurement unit to measure a duration that is the time during which the heart rate is equal to or greater than the target heart rate; a second judgment unit that judges whether the total duration measured within a specified period of time has reached the target time set by the setting unit; a memory control unit that controls the memory unit to store information that the duration has reached the target time if the second judgment unit judges that the duration has reached the target time; a display data generation unit that generates display data that displays data based on the reaching of the target time on a display screen if the second judgment unit judges that the total duration has reached the target time; and a display control unit that controls the display screen to display at least one of the target heart rate, actual related data, and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit.

[0089] Such a storage medium can easily promote improvement of brain function appropriate for the user.

[0090] It should be understood that the embodiments disclosed herein are illustrative in all respects and are not limiting in any respect. The scope of the present invention is not the above meaning, but is indicated by the claims, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0091] 11 Brain function improvement promotion device, 12,63 Display screen, 13 Band, 14 Button, 21 Control unit, 22 Memory memory, 22,56 Heart rate measurement unit, 24 Communication unit, 25,64 Time measurement unit, 31,71 Target exercise intensity calculation unit, 32,72 Setting unit, 33,73 First judgment unit, 34,74 Duration measurement control unit, 35,75 Second judgment unit, 36,76 Memory control unit, 37,77 Display data generation unit, 38,78 Display control unit, 41,42,43 Display data, 51 Brain function improvement promotion system, 52 Measurement sensor, 53 Terminal device, 54 Measurement sensor communication unit, 55 Measurement sensor control unit, 57 Measurement sensor memory, 61 Terminal device communication unit, 62 Terminal device control unit, 65 Terminal device memory, 81a,81b Area data, 82a,82b Graph data, 83a, 83b icon data.

Claims

1. A brain function improvement promotion device that can be worn on a user's body and promotes improvement of the user's brain function, a storage unit for storing data; a display screen for displaying the data; a time measurement unit that measures time; a heart rate measuring unit that measures the user's heart rate over time; a target exercise intensity calculation unit that calculates a target heart rate and a target time to be reached within a predetermined time limit, which are set as target exercise intensity necessary for the user to promote improvement of brain function; a setting unit that sets the target heart rate and the target time calculated by the target exercise intensity calculation unit; a first determination unit that determines whether the heart rate of the user measured by the heart rate measurement unit is equal to or higher than the target heart rate set by the setting unit; a duration measurement control unit that, when the first determination unit determines that the user's heart rate has become equal to or higher than the target heart rate, controls the time measurement unit to measure a duration that is a time period during which the heart rate remains equal to or higher than the target heart rate; a second determination unit that determines whether the total of the durations measured within the predetermined time period has reached the target time set by the setting unit; a storage control unit that, when the second determination unit determines that the total duration has reached the target time, controls the storage unit to store information indicating that the total duration has reached the target time; a display data generating unit that generates display data for displaying data based on the reaching of the target time on the display screen when the second determining unit determines that the total duration has reached the target time; a display control unit that controls the display screen to display at least one of the target heart rate, actual related data, and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit, the exercise that is the subject of the user's heart rate measured by the heart rate measurement unit includes exercise in everyday life, The brain function improvement promotion device, wherein the setting of the target heart rate and the target time in the setting unit does not require the setting of a specific exercise task in advance.

2. A brain function improvement promotion device that can be worn on a user's body and promotes improvement of the user's brain function, a storage unit for storing data; a display screen for displaying the data; a time measurement unit that measures time; a heart rate measuring unit that measures the user's heart rate over time; a target exercise intensity calculation unit that calculates a target heart rate and a target time to be reached within a predetermined time limit, which are set as target exercise intensity necessary for the user to promote improvement of brain function; a setting unit that sets the target heart rate and the target time calculated by the target exercise intensity calculation unit; a first determination unit that determines whether the heart rate of the user measured by the heart rate measurement unit is equal to or higher than the target heart rate set by the setting unit; a duration measurement control unit that, when the first determination unit determines that the user's heart rate has become equal to or higher than the target heart rate, controls the time measurement unit to measure a duration that is a time period during which the heart rate remains equal to or higher than the target heart rate; a second determination unit that determines whether the total of the durations measured within the predetermined time period has reached the target time set by the setting unit; a storage control unit that, when the second determination unit determines that the total duration has reached the target time, controls the storage unit to store information indicating that the total duration has reached the target time; a display data generating unit that generates display data for displaying data based on the reaching of the target time on the display screen when the second determining unit determines that the total duration has reached the target time; a display control unit that controls the display screen to display at least one of the target heart rate, actual related data, and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit, The target exercise intensity calculation unit calculates an optimized target heart rate as the target heart rate, which is the highest possible heart rate while satisfying the condition of performing exercise continuously or without interruption.

3. The brain function improvement promotion device according to claim 1 or claim 2, wherein the improvement of brain function includes at least one of suppressing the progression of dementia, suppressing atrophy of brain morphology including negative changes in brain morphology, and improving brain health score.

4. 3. The brain function improvement promotion device according to claim 1, wherein the display data generation unit generates display data indicating that the user's heart rate measured by the heart rate measurement unit is not equal to or higher than the target heart rate within a certain period of time from a predetermined timing, when the time measured by the time measurement unit is not judged by the first judgment unit to be equal to or higher than the target heart rate.

5. 3. The brain function improvement promotion device according to claim 1, wherein the determination by the first determination unit is refreshed at predetermined intervals.

6. The brain function improvement promotion device according to claim 1 or 2, wherein the target exercise intensity calculation unit calculates the target heart rate using at least one method of a rule-based model, a machine learning model, or a deep learning model.

7. The brain function improvement promotion device according to claim 1, wherein the target exercise intensity calculation unit calculates an optimized target heart rate as the target heart rate, which is the highest possible heart rate while satisfying the condition of performing exercise continuously or without interruption.

8. A brain function improvement promotion system that promotes improvement of a user's brain function, a measurement sensor that can be worn on the body of the user and includes a heart rate measurement unit that measures the heart rate of the user over time; and a terminal device that can communicate with the measurement sensor; The terminal device a storage unit for storing data; a display screen for displaying the data; a time measurement unit that measures time; a target exercise intensity calculation unit that calculates a target heart rate and a target time to be reached within a predetermined time limit, which are set as target exercise intensity necessary for the user to promote improvement of brain function; a setting unit that sets the target heart rate and the target time calculated by the target exercise intensity calculation unit; a first determination unit that determines whether the heart rate of the user measured by the heart rate measurement unit is equal to or higher than the target heart rate set by the setting unit; a duration measurement control unit that, when the first determination unit determines that the user's heart rate has become equal to or higher than the target heart rate, controls the time measurement unit to measure a duration that is a time period during which the heart rate remains equal to or higher than the target heart rate; a second determination unit that determines whether the total of the durations measured within the predetermined time period has reached the target time set by the setting unit; a storage control unit that, when the second determination unit determines that the duration has reached the target time, controls the storage unit to store information indicating that the duration has reached the target time; a display data generating unit that generates display data for displaying data based on the reaching of the target time on the display screen when the second determining unit determines that the total duration has reached the target time; a display control unit that controls the display screen to display at least one of the target heart rate, actual related data, and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit, the exercise that is the subject of the user's heart rate measured by the heart rate measurement unit includes exercise in everyday life, A brain function improvement promotion system, wherein the setting of the target heart rate and the target time in the setting unit does not require the setting of a specific exercise task in advance.

9. A brain function improvement promotion method for promoting improvement of a user's brain function, measuring the user's heart rate over time; calculating a target heart rate and a target time to be reached within a predetermined time limit, which are set as target exercise intensity necessary for the user to promote improvement of brain function; setting the calculated target heart rate and target time; determining whether the measured heart rate of the user is equal to or higher than the set target heart rate; a step of controlling the device to measure a duration during which the user's heart rate remains at or above the target heart rate when it is determined that the user's heart rate has reached or exceeded the target heart rate; a step of determining whether the total duration measured within the predetermined time period has reached the set target time; a step of controlling, when it is determined that the duration has reached the target time, to store information that the duration has reached the target time; generating display data that displays data based on the total duration reaching the target time if it is determined that the total duration has reached the target time; and controlling the display of at least one of the calculated target heart rate, actual related data and time, and the generated display data; the exercise that is the subject of the user's heart rate measured in the measuring step includes exercise in everyday life, A method for promoting improvement of brain function, wherein the setting of the target heart rate and the target time in the setting step does not require the setting of a specific exercise task in advance.

10. A brain function improvement promotion system program for use in a brain function improvement promotion system that promotes improvement of the user's brain function, the brain function improvement promotion system comprising: a measurement sensor that can be worn on a user's body and includes a heart rate measurement unit that measures the user's heart rate over time; and a terminal device that includes a memory unit that stores data, a display screen that displays data, and a time measurement unit that measures time, and that is capable of communicating with the measurement sensor, the brain function improvement promotion system comprising: The terminal device, a target exercise intensity calculation unit that calculates a target heart rate and a target time to be reached within a predetermined time limit, which are set as target exercise intensity necessary for the user to promote improvement of brain function; a setting unit that sets the target heart rate and the target time calculated by the target exercise intensity calculation unit; a first determination unit that determines whether the heart rate of the user measured by the heart rate measurement unit is equal to or higher than the target heart rate set by the setting unit; a duration measurement control unit that, when it is determined by the first determination unit that the user's heart rate has become equal to or higher than the target heart rate, controls the time measurement unit to measure a duration that is a time period during which the heart rate remains equal to or higher than the target heart rate; a second determination unit that determines whether the total of the durations measured within the predetermined time period has reached the target time set by the setting unit; a storage control unit that, when the second determination unit determines that the duration has reached the target time, controls the storage unit to store information indicating that the duration has reached the target time; a display data generating unit that generates display data for displaying data based on the reaching of the target time on the display screen when the second determining unit determines that the total duration has reached the target time; and a display control unit that controls the display of at least one of the target heart rate, actual related data, and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit on the display screen; the exercise that is the subject of the user's heart rate measured by the heart rate measurement unit includes exercise in everyday life, The setting unit sets the target heart rate and the target time without requiring a specific exercise task to be set in advance.

11. A computer-readable recording medium used in a brain function improvement promotion system for promoting improvement of the user's brain function, said recording medium comprising: a measurement sensor that can be worn on a user's body and includes a heart rate measurement unit that measures the user's heart rate over time; and a terminal device that includes a memory unit that stores data, a display screen that displays data, and a time measurement unit that measures time, and is capable of communicating with the measurement sensor; The terminal device, a target exercise intensity calculation unit that calculates a target heart rate and a target time to be reached within a predetermined time limit, which are set as target exercise intensity necessary for the user to promote improvement of brain function; a setting unit that sets the target heart rate and the target time calculated by the target exercise intensity calculation unit; a first determination unit that determines whether the heart rate of the user measured by the heart rate measurement unit is equal to or higher than the target heart rate set by the setting unit; a duration measurement control unit that, when the first determination unit determines that the user's heart rate has become equal to or higher than the target heart rate, controls the time measurement unit to measure a duration that is a time period during which the heart rate remains equal to or higher than the target heart rate; a second determination unit that determines whether the total of the durations measured within the predetermined time period has reached the target time set by the setting unit; a storage control unit that, when the second determination unit determines that the duration has reached the target time, controls the storage unit to store information indicating that the duration has reached the target time; a display data generation unit that generates display data for displaying data based on the reaching of the target time on the display screen when the second determination unit determines that the total duration has reached the target time; and a display control unit that controls the display of at least one of the target heart rate, actual related data, and time calculated by the target exercise intensity calculation unit, and the display data generated by the display data generation unit on the display screen; the exercise that is the subject of the user's heart rate measured by the heart rate measurement unit includes exercise in everyday life, A computer-readable recording medium having a program for a brain function improvement promotion system recorded thereon, in which the setting of the target heart rate and the target time in the setting unit does not require the setting of a specific exercise task in advance.

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