Fatigue evaluation device, fatigue evaluation system, fatigue evaluation program, and fatigue evaluation method
The fatigue evaluation device addresses the issue of uniform advice in conventional systems by calculating and evaluating the difference between objective and subjective fatigue levels, offering personalized advice for athletes based on these discrepancies.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- TANITA CORP
- Filing Date
- 2022-07-20
- Publication Date
- 2026-07-09
AI Technical Summary
Conventional fatigue assessment systems fail to differentiate between mismatched objective and subjective fatigue levels, leading to uniform advice regardless of the discrepancy between them.
A fatigue evaluation device that calculates and evaluates the difference between objective and subjective fatigue levels, incorporating biological information and self-reported responses, and adjusts assessments based on these differences.
Enables tailored fatigue evaluations by accounting for discrepancies between objective and subjective measures, providing personalized advice for athletes to manage their physical condition effectively.
Smart Images
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Abstract
Description
[Technical Field]
[0001] The present invention relates to a fatigue evaluation device, fatigue evaluation system, fatigue evaluation program, and fatigue evaluation method for evaluating the fatigue of a subject.
[0002] In recent years, the management of athletes' physical condition has become increasingly important. Evaluating an athlete's fatigue is a crucial indicator for estimating their condition. Here, fatigue can be categorized into subjective fatigue, which is based on the subject's subjective perception, and objective fatigue, which is obtained by measuring the subject's biological information. By considering both subjective and objective fatigue, it is possible to determine appropriate training menus and rest periods for athletes, thereby enabling proper physical condition management. Specifically, for example, instead of deciding whether or not to train based solely on an athlete's subjective fatigue level, it is desirable to measure objective fatigue levels such as autonomic nervous system balance and changes in body water content, and to take these values into account when making a decision.
[0003] Conventional technology has proposed a fatigue evaluation system that plots objective and subjective fatigue levels on a two-dimensional coordinate system and provides advice to the subject based on where the coordinates fall within one of four quadrants (for example, Patent Document 1). This fatigue evaluation system can assess fatigue levels, which are an important indicator for estimating an athlete's condition. [Prior art documents] [Patent Documents]
[0004] [Patent Document 1] Patent No. 6535865 [Overview of the project] [Problems that the invention aims to solve]
[0005] However, according to conventional fatigue assessment systems, even if the objective fatigue level and subjective fatigue level do not match, as long as they do match, the assessment will be the same. For example, if the objective fatigue level is 100 and the subjective fatigue level is 100, and if the objective fatigue level is 55 and the subjective fatigue level is 90, both will be plotted in the third quadrant, and the same advice will be given in both cases.
[0006] This invention has been made in view of the above-mentioned problems, and one of its objectives is to appropriately evaluate fatigue based on the objective and subjective fatigue levels of the person being measured. [Means for solving the problem]
[0007] The fatigue evaluation device of the first embodiment is a fatigue evaluation device for evaluating the fatigue of a person being measured, and comprises an objective fatigue acquisition unit for acquiring the objective fatigue level of the person being measured, a subjective fatigue acquisition unit for acquiring the subjective fatigue level of the person being measured, and a fatigue evaluation unit for evaluating the fatigue of the person being measured according to the degree of difference between the objective fatigue level and / or the subjective fatigue level of the person being measured, based on a standard determined based on the objective fatigue level and the subjective fatigue level.
[0008] This configuration allows for the evaluation of fatigue based on the difference between objective and subjective fatigue levels.
[0009] The fatigue evaluation device of the second embodiment is configured such that, in the fatigue evaluation device of the first embodiment, the objective fatigue level acquisition unit calculates the objective fatigue level based on the biological information acquired from the person being measured.
[0010] This configuration allows for the acquisition of an objective fatigue level by calculating it from the subject's biological information.
[0011] The fatigue evaluation device of the third embodiment is configured such that, in the fatigue evaluation device of the first or second embodiment, the subjective fatigue level acquisition unit calculates the subjective fatigue level based on the answers to questions about fatigue level obtained from the person being measured.
[0012] This configuration allows for the calculation of subjective fatigue levels from the subject's responses to questions about fatigue.
[0013] The fatigue evaluation device of the fourth embodiment has a configuration in which, in any of the fatigue evaluation devices of the first to third embodiments, the criterion is a state in which the objective fatigue level and the subjective fatigue level coincide.
[0014] This configuration allows for the evaluation of fatigue based on the degree of difference (deviation) from a state where subjective fatigue levels and objective fatigue levels coincide.
[0015] The fatigue evaluation device of the fifth embodiment is a fatigue evaluation device of any of the first to fourth embodiments described above, wherein the fatigue evaluation unit has a configuration that performs different evaluations depending on whether the objective fatigue level of the person being measured is greater than the standard or whether the subjective fatigue level of the person being measured is greater than the standard.
[0016] This configuration allows for different assessments of fatigue levels depending on whether the objective fatigue level is high or the subjective fatigue level is high.
[0017] The fatigue evaluation device of the sixth embodiment is a fatigue evaluation device of any of the first to fifth embodiments described above, wherein the fatigue evaluation unit has a configuration that evaluates the fatigue of the person being measured according to the magnitude of the difference.
[0018] This configuration allows for an evaluation of fatigue levels based on the magnitude of the difference between objective and subjective fatigue levels.
[0019] The fatigue evaluation device of the seventh embodiment further comprises a total fatigue level calculation unit that calculates a total fatigue level based on the objective fatigue level of the person being measured, the subjective fatigue level of the person being measured, and the difference level, in addition to the fatigue evaluation device of the first to sixth embodiment described above, and the fatigue evaluation unit has a configuration that evaluates the fatigue of the person being measured according to the total fatigue level.
[0020] This configuration allows for the calculation of overall fatigue levels based not only on objective and subjective fatigue levels, but also on the degree of difference.
[0021] The fatigue evaluation apparatus of the eighth embodiment has a configuration in which, in addition to the fatigue evaluation apparatus of any of the first to seventh embodiments described above, a correction unit is further provided to correct the objective fatigue level of the person being measured calculated by the objective fatigue level calculation unit based on the person's past objective fatigue levels.
[0022] This configuration allows for correction of objective fatigue levels based on past objective fatigue levels.
[0023] The fatigue evaluation apparatus of the ninth embodiment has a configuration in which, in the fatigue evaluation apparatus of any of the first to eighth embodiments described above, a correction unit is further provided that corrects the subjective fatigue level of the person being measured calculated by the subjective fatigue level calculation unit based on the subject's past subjective fatigue levels.
[0024] This configuration allows subjective fatigue levels to be corrected based on past subjective fatigue levels.
[0025] The fatigue evaluation apparatus of the tenth embodiment has a configuration in which, in addition to the fatigue evaluation apparatus of the seventh embodiment, a correction unit is further provided to correct the total fatigue level calculated by the total fatigue level calculation unit based on the past total fatigue levels of the person being measured.
[0026] This configuration allows for correction of overall fatigue levels based on past overall fatigue levels.
[0027] The fatigue evaluation apparatus of the 11th embodiment has a configuration in which, in addition to the fatigue evaluation apparatus of any of the first to ten embodiments described above, a correction unit further comprises a unit that corrects at least one of the objective fatigue level of the subject and the subject's subjective fatigue level calculated by the objective fatigue level calculation unit based on the subject's performance.
[0028] This configuration allows for correction of objective and / or subjective fatigue levels based on the subject's performance.
[0029] The fatigue evaluation apparatus of the twelfth embodiment has a configuration in which, in addition to the fatigue evaluation apparatus of the seventh embodiment described above, a correction unit further comprises a unit that corrects the overall fatigue level calculated by the overall fatigue level calculation unit based on the performance of the person being measured.
[0030] This configuration allows for adjustment of overall fatigue levels based on the subject's performance.
[0031] The fatigue evaluation apparatus of the 13th embodiment further comprises a difference calculation unit that calculates the difference as the objective fatigue level of the subject and the amount of correction to the objective fatigue level of the subject necessary to make the subject's objective fatigue level and the subject's subjective fatigue level match the standard, in addition to the fatigue evaluation apparatus of the 1st to 12th embodiment described above.
[0032] This configuration allows for the calculation of the degree of difference based on the discrepancy between objective fatigue levels and subjective fatigue levels.
[0033] The fatigue evaluation device of the 14th embodiment further comprises a difference calculation unit that calculates the amount of correction to the objective fatigue level of the subject, which is necessary to make the objective fatigue level of the subject match the standard, in addition to the difference calculation unit, in the fatigue evaluation device of any of the first to 13 embodiments described above.
[0034] This configuration allows for the calculation of the degree of difference based on the discrepancy in objective fatigue levels.
[0035] The fatigue evaluation device of the 15th embodiment is a fatigue evaluation device of any of the 1st to 13th embodiments described above, further comprising a difference calculation unit that calculates the amount of correction to the subjective fatigue level of the person being measured, which is necessary to make the subjective fatigue level of the person being measured match the standard, as the difference.
[0036] This configuration allows for the calculation of the degree of difference based on the discrepancy in subjective fatigue levels.
[0037] The fatigue evaluation apparatus of the 16th embodiment is a fatigue evaluation apparatus of any of the first to 13 embodiments described above, wherein the fatigue evaluation unit further has a configuration that determines advice according to the evaluation.
[0038] This configuration allows for the determination of advice based on the assessment of fatigue.
[0039] The fatigue evaluation device of the 17th embodiment is a fatigue evaluation device of any of the 1st to 16th embodiments described above, further comprising a change calculation unit that calculates the change from the objective fatigue level of the subject and the subject's subjective fatigue level, which were previously calculated, to the objective fatigue level of the subject and the subject's subjective fatigue level, which were calculated afterward.
[0040] This configuration allows for the calculation of changes in both objective and subjective fatigue levels.
[0041] The fatigue evaluation apparatus of the 18th embodiment is the fatigue evaluation apparatus of the 17th embodiment described above, wherein the fatigue evaluation unit has a configuration that determines advice in response to the changes.
[0042] This configuration allows for the determination of advice in response to changes.
[0043] The fatigue evaluation apparatus of the 19th embodiment is a fatigue evaluation apparatus of any of the first to 18 embodiments described above, wherein the fatigue evaluation unit further has a configuration that shows the progression of the objective fatigue level of the subject to be measured up to the present, and generates a target future objective fatigue level of the subject to be measured based on the progression of the objective fatigue level of the subject in good past examples.
[0044] This configuration allows us to present the ideal progression of objective fatigue levels towards the goal.
[0045] The fatigue evaluation apparatus of the 20th embodiment is configured such that, in the fatigue evaluation apparatus of the 7th embodiment described above, the fatigue evaluation unit further generates presentation information that shows the trend of the overall fatigue level up to the present, and also shows the trend of the overall fatigue level of past good examples as the target future overall fatigue level.
[0046] This configuration allows us to present the ideal progression of overall fatigue levels up to the goal.
[0047] A fatigue evaluation system according to the 21st embodiment is a fatigue evaluation system for evaluating the fatigue of a person being measured, comprising: an objective fatigue acquisition unit for acquiring the objective fatigue level of the person being measured; a subjective fatigue acquisition unit for acquiring the subjective fatigue level of the person being measured; and a fatigue evaluation unit for evaluating the fatigue of the person being measured according to the degree of difference between the objective fatigue level and / or the subjective fatigue level of the person being measured, based on a standard determined based on the objective fatigue level and the subjective fatigue level.
[0048] This configuration also allows for the evaluation of fatigue based on the difference between objective and subjective fatigue levels.
[0049] A fatigue evaluation program according to the 22nd embodiment is a fatigue evaluation program for evaluating the fatigue of a person being measured, and has a configuration that causes a computer to execute an objective fatigue acquisition step for acquiring the objective fatigue level of the person being measured, a subjective fatigue acquisition step for acquiring the subjective fatigue level of the person being measured, and a fatigue evaluation step for evaluating the fatigue of the person being measured according to the degree of difference between the objective fatigue level and / or the subjective fatigue level of the person being measured, based on a standard determined based on the objective fatigue level and the subjective fatigue level.
[0050] This configuration also allows for the evaluation of fatigue based on the difference between objective and subjective fatigue levels.
[0051] A fatigue evaluation method according to the 23rd embodiment is a fatigue evaluation method for evaluating the fatigue of a person being measured, comprising: an objective fatigue acquisition step for acquiring the objective fatigue level of the person being measured; a subjective fatigue acquisition step for acquiring the subjective fatigue level of the person being measured; and a fatigue evaluation step for evaluating the fatigue of the person being measured according to the degree of difference between the objective fatigue level and / or the subjective fatigue level of the person being measured, based on a standard determined based on the objective fatigue level and the subjective fatigue level.
[0052] This configuration also allows for the evaluation of fatigue based on the difference between objective and subjective fatigue levels. [Brief explanation of the drawing]
[0053] [Figure 1] Figure 1 is an external view of the fatigue evaluation system according to an embodiment. [Figure 2] Figure 2 is a block diagram showing the configuration of the fatigue evaluation system according to the embodiment. [Figure 3] Figure 3 shows a graph for determining the objective fatigue level in the embodiment. [Figure 4] Figure 4 is a graph illustrating the calculation of the degree of difference in the embodiment. [Figure 5] Figure 5 is a graph illustrating another example of calculating the degree of difference in the embodiment. [Figure 6]Figure 6 is a table showing the relationship between the evaluation of fatigue level and the content of the advice in the embodiment. [Figure 7] Figure 7 is a graph showing the change in fatigue level in the embodiment. [Figure 8] Figure 8 is a table showing the relationship between the change in fatigue level and the content of the advice in the embodiment. [Figure 9A] Figure 9A is a graph showing multiple past overall fatigue levels of a particular subject. [Figure 9B] Figure 9B is a graph showing multiple past overall fatigue levels after correction. [Figure 10] Figure 10 is a graph showing the past changes in fatigue levels for the embodiment. [Figure 11] Figure 11 is a graph showing the historical changes in fatigue levels for the embodiment. [Figure 12] Figure 12 is a flowchart of the fatigue evaluation method using the fatigue evaluation system of the embodiment. [Modes for carrying out the invention]
[0054] Embodiments of the present invention will be described below. The embodiments described below are merely examples of how the present invention can be implemented, and the present invention is not limited to the specific configurations described below. In implementing the present invention, specific configurations may be adopted as appropriate depending on the embodiment.
[0055] Figure 1 is an external view of the fatigue evaluation system according to this embodiment. The fatigue evaluation system 100 of this embodiment consists of a biomechanism 10 and a fatigue evaluation device 20. In this embodiment, the biomechanism 10 is a body composition analyzer that measures body composition, and the fatigue evaluation device 20 is a smartphone that executes the fatigue evaluation program of this embodiment. However, the biomechanism 10 is not limited to a body composition analyzer, but can be any device that can acquire biometric information for calculating the objective fatigue level described later. Also, the fatigue evaluation device 20 is not limited to a smartphone, but can be any information processing device that can execute the fatigue evaluation program, such as a tablet, laptop, or desktop computer. Furthermore, the biomechanism 10 and the fatigue evaluation device 20 may be integrated into a single device to constitute the fatigue evaluation system 100.
[0056] The fatigue evaluation system 100 may include multiple types of biomeasuring devices 10 that measure different biological information. For example, a biomeasuring device 10 that measures body composition, i.e., a body composition analyzer, and a biomeasuring device 10 that measures heart rate, i.e., a heart rate monitor, may be included in the fatigue evaluation system 100 as separate devices. Furthermore, other devices such as a blood pressure monitor that measures the blood pressure of the person being measured, an activity tracker that counts the number of steps taken by the person being measured, and an automated biochemical analyzer that performs blood component analysis may be included in the fatigue evaluation system 100 as biomeasuring devices 10.
[0057] The biometric measurement device 10 and the fatigue evaluation device 20 can communicate with each other via short-range wireless communication. The biometric measurement device 10 transmits the subject's biometric information acquired through measurement to the fatigue evaluation device 20 via short-range wireless communication. Alternatively, the biometric measurement device 10 and the fatigue evaluation device 20 may each connect to a cloud and share the subject's biometric information via the cloud.
[0058] As shown in Figure 1, the body composition analyzer, which is the biomedical measurement device 10, has a generally flat shape, and its upper surface is equipped with a front electrode 101 for the left foot, a rear electrode 102 for the left foot, a front electrode 103 for the right foot, a rear electrode 104 for the right foot, and a display panel 105. In this embodiment, the front electrode 101 for the left foot and the front electrode 103 for the right foot are used as electrodes for conducting electricity, and the rear electrode 102 for the left foot and the rear electrode 104 for the right foot are used as electrodes for measurement. Thus, the body composition analyzer as the biomedical measurement device 10 in this embodiment is a BI type body composition analyzer equipped with four electrodes.
[0059] The person being measured can have their weight, body composition, and heart rate measured by standing upright on the biomedical measurement device 10 with bare feet, while the fatigue evaluation device 20 is placed near the biomedical measurement device 10. At this time, the base of the toes of the left foot is in contact with the front electrode 101 for the left foot, the heel of the left foot is in contact with the rear electrode 102 for the left foot, the base of the toes of the right foot is in contact with the front electrode 103 for the right foot, and the heel of the right foot is in contact with the rear electrode 104 for the right foot.
[0060] The fatigue evaluation device 20 is equipped with a touch panel 201 that serves as both a display and input unit, and also has mechanical buttons on its sides and front. The fatigue evaluation device 20 starts the application program of this embodiment and establishes communication with the biometric measurement device 10. As a result, the biometric information acquired by the biometric measurement device 10 is transmitted to the fatigue evaluation device 20. The biometric information acquired by the biometric measurement device 10 is also displayed on the display unit 105.
[0061] Figure 2 is a block diagram showing the configuration of the fatigue evaluation system according to the embodiment. The biomedical measurement device 10 includes a weight measuring device 11, a bioelectrical impedance measuring device 12, and a communication device 13.
[0062] The weight measuring device 11 is equipped with a load cell consisting of a metal strain-generating element that deforms in response to a load, and strain gauges attached to the strain-generating element. When a person to be measured stands on the biomeasuring device 10, the strain-generating element of the load cell bends due to the person's weight, causing the strain gauges to expand and contract. The resistance value (output value) of the strain gauges changes according to this expansion and contraction. The weight measuring device 11 calculates the weight from the difference between the output value (zero point) of the load cell when no load is applied and the output value when a load is applied. The configuration for measuring weight using a load cell can be the same as that of a general digital weighing scale.
[0063] The bioelectrical impedance measuring device 12 applies a weak alternating current to the front electrode 101 for the left foot and the front electrode 103 for the right foot, which are current-carrying electrodes, and measures the potential difference between them and the rear electrode 103 for the left foot and the rear electrode 104 for the right foot, which are measurement electrodes. This allows the bioelectrical impedance measuring device 12 to obtain the bioelectrical impedance, which consists of a reactance component X and a resistance component R. The bioelectrical impedance measuring device 12 measures bioelectrical impedance at multiple frequencies, such as 5 kHz and 50 kHz. When the biomedical measurement device 10 is an 8-electrode type, the bioelectrical impedance measuring device 12 can measure the bioelectrical impedance of various parts of the body.
[0064] Although not shown in Figure 2, the biomedical measurement device 10, which functions as a body composition analyzer, has the function of acquiring body composition information such as fat percentage, fat mass, lean body mass, muscle mass, visceral fat mass, visceral fat level, visceral fat area, subcutaneous fat mass, basal metabolic rate, bone mass, body water percentage, BMI (Body Mass Index), intracellular fluid volume, and extracellular fluid volume by applying the subject's height, age, and sex, weight measured by the weight measuring device 11, and bioelectrical impedance measured by the bioelectrical impedance measuring device 12 to a predetermined regression equation and performing calculations.
[0065] The communication device 13 transmits the weight measured by the weight measuring device 11 and the bioelectrical impedance measured by the bioelectrical impedance measuring device 12 to the fatigue evaluation device 20.
[0066] In this embodiment, the biomechanical measurement device 10 measures the subject's weight and bioelectrical impedance as biological information, and the fatigue evaluation device 20 acquires the subject's weight and bioelectrical impedance as desired information. However, the biomechanical measurement device 10 may also measure other biological information such as heart rate (pulse rate), heart rate variability (pulse rate variability), life logs such as activity level and sleep status, blood pressure, blood components, saliva components, concentration of physiologically active substances (hormones), concentration of antioxidants, concentration of metabolites, and information on viruses in the body. Alternatively, the biomechanical measurement device 10 is not limited to one, and multiple types of biomechanical measurement devices 10 that acquire each of the above biological information may be able to communicate with the fatigue evaluation device 20.
[0067] The fatigue evaluation device 20 comprises a communication device 21, a storage device 22, an input device 23, a processing unit (processor) 24, and a display device 25. The communication device 21 establishes short-range communication with the communication device 13 of the biomeasuring device 10 and receives weight and bioelectrical impedance sent from the communication device 13. The storage device 22 stores the fatigue level calculated by the processing unit 24. The input device 23 accepts input from the person being measured.
[0068] The computing device 24 functions as a biological information acquisition unit 241, a response acquisition unit 242, an objective fatigue level calculation unit 243, a subjective fatigue level calculation unit 244, a difference level calculation unit 245, a total fatigue level calculation unit 246, a correction unit 247, a fatigue evaluation unit 248, and a change calculation unit 249 by executing the fatigue evaluation program of this embodiment. The fatigue evaluation program is provided as an application program to the fatigue evaluation device 20, which consists of a smartphone, via communication or a storage medium, and is executed by the computing device 24.
[0069] The display device 25 is a device composed of multiple pixels, such as a liquid crystal panel. The display device 25 displays the results of calculations performed by the arithmetic unit 24.
[0070] The biological information acquisition unit 241 acquires the subject's weight and bioelectrical impedance received from the biological measurement device 10 via the communication device 21. As described above, the biological measurement device 10 may be a device that measures biological information other than weight and bioelectrical impedance, in which case the biological information acquisition unit 241 acquires the biological information measured by such a device. Alternatively, this biological information may be input via the input device 23.
[0071] The response acquisition unit 242 acquires the subject's responses to one or more of the following: questions about fatigue-related disorders, a fatigue VAS (Visual Analogue Scale), a Chalder Fatigue Scale (CFQ), a fatigue symptom score (CFQ11) calculated using 11 items from the CFQ (Tanaka M et al., Psychol Rep_2010, 106, 2, 567-575), a questionnaire or VAS regarding presenteeism, and a questionnaire regarding fatigue.
[0072] These answers are obtained when the subject inputs them using the input device 23. The answer acquisition unit 242 displays the question and answer input form on the display device 25 and acquires the answers entered by the subject into the input device 23 in relation to the answer input form displayed on the display device 25. Alternatively, the answer acquisition unit 242 may acquire answers entered by the subject using another device via communication or other means.
[0073] A "questionnaire on fatigue-related impairment" refers to a question that confirms the subject's subjective assessment of whether or not there is a causal relationship between fatigue and some kind of impairment. For example, a "questionnaire on fatigue-related impairment" might ask whether the subject feels that fatigue is interfering with their work, housework, or studies, or what diseases they think may be causing their fatigue. A "questionnaire on fatigue" asks whether the subject is aware of any symptoms of fatigue, for example, whether they feel lethargic, or whether they feel tired even after a full night's sleep. For presenteeism questionnaires, for example, the WHO's Health and Work Performance Questionnaire (HPQ) or Work Limitations Questionnaire (WLQ) may be used.
[0074] The objective fatigue level calculation unit 243 calculates the objective fatigue level based on the biological information acquired by the biological information acquisition unit 241. Specifically, the objective fatigue level calculation unit 243 calculates the objective fatigue level based on the reactance X and resistance R of the subject acquired by the body composition measuring device 12 of the biological measurement device 10.
[0075] Figure 3 shows a graph for determining the objective fatigue level in the embodiment. In Figure 3, the vertical axis represents reactance X, and the horizontal axis represents resistance R. A reference line 31 is set in this graph to indicate a standard for evaluating that there is no fatigue. The reference line 31 is set as a straight line that is a linear function of X and R. The objective fatigue level calculation unit 243 calculates the distance of the obtained reactance X and resistance R from the reference line as the first fatigue level.
[0076] In other words, the objective fatigue calculation unit 243 uses the value of axis D perpendicular to the reference line 31 as the first objective fatigue level. For example, as shown in Figure 3, reactance X A Resistance R A If the bioelectrical impedance A is obtained, then the value D on axis D of the bioelectrical impedance A is obtained. AThis represents the objective fatigue level. The objective fatigue level calculation unit 243 sets the range of axis D so that the objective fatigue level is within the range of 0 points (minimum fatigue level) to 100 points (maximum fatigue level). Here, the minimum fatigue level is a state in which fatigue has accumulated, and the maximum fatigue level is a state in which fatigue has not accumulated.
[0077] The graphs shown in Figure 3 are provided for each predetermined weight range. Therefore, the objective fatigue level calculation unit 243 selects the appropriate graph from among the multiple graphs provided based on the weight acquired by the biological information acquisition unit 241, and calculates the objective fatigue level by plotting the bioelectrical impedance on the graph.
[0078] As mentioned above, the bio-information used to calculate objective fatigue is not limited to bioelectrical impedance. For example, the bio-information used to calculate objective fatigue may be heart rate. In this case, the objective fatigue calculation unit 243 calculates objective fatigue by comparing the resting heart rate at the time of measurement with the resting heart rate when there is no fatigue. Alternatively, the objective fatigue calculation unit 243 may determine objective fatigue by subtracting the heart rate 60 seconds later from the average heart rate during the last 30 seconds of exercise in which the heart rate rises to 160-180.
[0079] Furthermore, if the biological information acquisition unit 241 acquires both bioelectrical impedance and heart rate, the objective fatigue calculation unit 243 may calculate the objective fatigue level by weighting and adding a first objective fatigue level based on bioelectrical impedance and a second objective fatigue level based on heart rate. The objective fatigue calculation unit 243 weights and adds the first objective fatigue level and the second objective fatigue level so that the objective fatigue level is in the range of 0 points (minimum fatigue level) to 100 points (maximum fatigue level).
[0080] Furthermore, the biological information acquisition unit 241 may acquire weight measured by the weight measuring device 11 as biological information. Intense exercise can cause dehydration due to sweating, leading to weight loss. Neglecting proper hydration and nutrition afterward can also contribute to fatigue. Therefore, the objective fatigue level calculation unit 243 determines that fatigue is accumulating if weight has decreased sharply compared to the previous day and calculates the objective fatigue level.
[0081] The subjective fatigue level calculation unit 244 calculates the subjective fatigue level based on the responses obtained by the response acquisition unit 242. Each response has a predetermined score, and the subjective fatigue level calculation unit 244 sums the scores of multiple responses from the person being measured to the questionnaire. If the response acquisition unit 242 has obtained responses from multiple questionnaires, the subjective fatigue level calculation unit 244 further sums the total scores from each questionnaire. The subjective fatigue level calculation unit 244 calculates the subjective fatigue level so that it falls within the range of 0 points (minimum fatigue) to 100 points (maximum fatigue).
[0082] Figure 4 is a graph illustrating the calculation of the degree of difference in the embodiment. In the graph of Figure 4, the horizontal axis represents the objective fatigue level D. O The vertical axis represents subjective fatigue level D. S This represents a two-dimensional coordinate system. Points corresponding to the objective fatigue level calculated by the objective fatigue level calculation unit 243 and the subjective fatigue level calculated by the subjective fatigue level calculation unit 244 are plotted on the graph in Figure 4. In the graph in Figure 4, the further to the right the plot position is, the lower the objective fatigue level D O The smaller the value, and the higher the value, the higher the subjective fatigue level (D). S Two-dimensional coordinates are defined as having small values.
[0083] In the graph in Figure 4, the first quadrant represents the region where both objective and subjective fatigue levels are low, the second quadrant represents the region where objective fatigue levels are high and subjective fatigue levels are low, the third quadrant represents the region where both objective and subjective fatigue levels are high, and the fourth quadrant represents the region where objective fatigue levels are low and subjective fatigue levels are high. Each axis ranges from 0 points (minimum fatigue) to 100 points (maximum fatigue).
[0084] In the graph of FIG. 4, the objective fatigue degree D O and the subjective fatigue degree D S The line segment D O = D S is set as the reference line 41. The difference calculation unit 245 calculates the objective fatigue degree D O and the subjective fatigue degree D S The correction amounts of the objective fatigue degree D<o:p>0000014< / o:p>and the objective fatigue degree D<o:p>0000015< / o:p>, that is, the length of the perpendicular line dropped from the plotted point in the graph of FIG. 4 to the reference line 41 is calculated as the difference degree d. As is clear from the graph of FIG. 4, the difference degree d is d = (√2 / 2) × |D O - D S |.
[0085] In the graph of FIG. 4, as an example of a criterion determined based on the objective fatigue degree D O and the subjective fatigue degree D S , a line segment connecting the points where the objective fatigue degree D O and the subjective fatigue degree D S are the same is set. When the fatigue degree (D O , D S ) of the measured person is on this line segment, it means that the objective fatigue degree D O and the subjective fatigue degree D S of the measured person are in a matching state. However, the criterion determined based on the objective fatigue degree D O and the subjective fatigue degree D S does not have to satisfy the condition that the objective fatigue degree D O and the subjective fatigue degree D S are the same. The criterion determined based on the objective fatigue degree D O and the subjective fatigue degree D S can be, for example, a straight line or a curve passing through the intersection point of the objective fatigue degree D O and the subjective fatigue degree D S where the performance of the measured person improves, or it can be represented by a straight line or a curve passing through the intersection point of the objective fatigue degree D O and the subjective fatigue degree D SThe reference may be represented by a straight line or curve passing through an intersection point where at least one of the lines is raised or lowered. Alternatively, the reference may be the reference line 41 of the graph in Figure 4 shifted in the vertical or horizontal direction, or the reference line 41 of the graph in Figure 4 with a changed slope. Or, the reference may be represented by a series of discontinuous lines, for example, lines that are discontinuous on the vertical and / or horizontal axes of the graph in Figure 4.
[0086] From the distance (d) between the plotted points and the baseline 41, the objective fatigue level D is calculated. O Subjective fatigue level D S The deviation from this is evaluated. If the plotted point is located above the baseline 41, the objective fatigue level is D. O Subjective fatigue level D S This indicates that it is higher than the baseline. Conversely, if the plotted points are located below the baseline 41, the subjective fatigue level D S Objective fatigue level D O A higher value suggests that the person may be feeling unmotivated or experiencing fatigue in areas that cannot be detected by impedance or pulse rate. The magnitude of this difference d and whether the plotted result is above or below the baseline 41 determine the subjective fatigue level D. S Objective fatigue level D O This makes it possible to quantitatively evaluate the discrepancy.
[0087] Figure 5 is a graph illustrating another example of calculating the degree of difference in the embodiment. Objective fatigue level D O Subjective fatigue level D S The index used to evaluate the deviation (degree of difference) is not limited to the orthogonal distance d between the plotted coordinates and the baseline, but also the objective fatigue level D from the plotted point to the coordinate where it intersects the baseline 41. O Subjective fatigue level D S A straight line parallel to the axis representing the difference may be used. That is, the difference calculation unit 245 calculates the objective fatigue level D O Subjective fatigue level D S Objective fatigue level D required to match O Correction amount d OThe difference may be calculated as the degree of difference. Alternatively, the difference calculation unit 245 may calculate the objective fatigue level D O Subjective fatigue level D S Subjective fatigue level D required to match this S Correction amount d S This can also be calculated as the degree of difference.
[0088] The overall fatigue level calculation unit 246 calculates the objective fatigue level D O Subjective fatigue level D S Based on the difference d, the overall fatigue level D T The unit calculates the objective fatigue level D. Specifically, the overall fatigue level calculation unit 246 calculates the objective fatigue level D. O Subjective fatigue level D S The overall fatigue score D is calculated by subtracting the difference degree d from the highest score among them. T It is calculated as follows. For example, objective fatigue level D O 80 points, subjective fatigue level D S If the score was 60, then d = (√2 / 2) × |D O -D S |=(√2 / 2)×|80-60|=10√2, resulting in a total fatigue level of D. T This is calculated as 80 - 10√2 ≈ 66 points.
[0089] This calculation method results in an objective fatigue level of D O Subjective fatigue level D S In addition to each score, objective fatigue level D O Subjective fatigue level D S It is possible to present a score that also takes into account the degree of difference d. Another calculation method is objective fatigue level D. O Subjective fatigue level D S It is also possible to calculate the objective fatigue level by subtracting the difference d from the average score, but this method will result in a lower value, so the objective fatigue level D O Subjective fatigue level D S The overall fatigue score D is calculated by subtracting the difference degree d from the highest score among them. T It is preferable to do so.
[0090] In this way, the overall fatigue level calculation unit 246 calculates the overall fatigue level D T By calculating the overall fatigue level D, Tcan be quantitatively evaluated. As a result, the objective fatigue degree D O and the subjective fatigue degree D S It is possible to grasp the fatigue degree that combines the two. In addition, it is also possible to evaluate the transition of the past comprehensive fatigue degree by this.
[0091] The fatigue evaluation unit 248 evaluates the fatigue of the measured person based on the objective fatigue degree, the subjective fatigue degree, the comprehensive fatigue degree, and the difference degree between the objective fatigue degree and the subjective fatigue degree. Ideally, the objective fatigue degree and the subjective fatigue degree should be the same, but they may deviate. Therefore, the fatigue evaluation unit 248 makes different evaluations of the fatigue of the measured person when the objective fatigue degree is greater than the subjective fatigue degree and when the subjective fatigue degree is greater than the objective fatigue degree. Furthermore, the fatigue evaluation unit 248 evaluates the fatigue of the measured person according to the magnitude of the difference degree.
[0092] After evaluating the fatigue of the measured person as described above, the fatigue evaluation unit 248 determines advice according to the evaluation. The fatigue evaluation unit 248 determines the advice by selecting the advice corresponding to the evaluation of fatigue from among a plurality of pre-prepared advices. The following will be specifically described.
[0093] FIG. 6 is a table showing the relationship between the evaluation of the fatigue degree and the content of the advice in the embodiment. The fatigue evaluation unit 248 is based on the position of the objective fatigue degree and the subjective fatigue degree (hereinafter simply referred to as "fatigue degree") (D O , D S ) with respect to the reference line 41 (whether it is above or below the reference line 41), the distance (difference degree d) between the fatigue degree (D O , D S ) and the reference line 41, and the comprehensive fatigue degree D T , determines the advice to be presented to the measured person according to the table in FIG. 6.
[0094] As described above, if the fatigue degree (D O , D S ) is above the reference line 41, it indicates that the objective fatigue degree D O is higher than the subjective fatigue degree D S , and if the fatigue degree (D O , D SIf it is below the reference line 41, the objective fatigue degree D O is higher than the subjective fatigue degree D S . When the objective fatigue degree D O is relatively high, although one may feel less fatigue sensually, since fatigue is actually accumulating, it is conceivable that the risk of injury increases as the amount of exercise increases. Therefore, the fatigue evaluation unit 248 determines to provide advice that alerts the possibility of such a situation. On the contrary, when the subjective fatigue degree D S is relatively high, it is conceivable that the risk of injury due to carelessness such as lack of concentration increases. Therefore, the fatigue evaluation unit 248 determines to provide advice such as refreshing the mood or improving attention.
[0095] The fatigue evaluation unit 248 evaluates the deviation between the objective fatigue degree D O and the subjective fatigue degree D S by using the degree of difference d, and determines advice for it. For example, if d < 5, it can be evaluated that the actual physical fatigue is almost consistent with the feeling, and if d > 20, it can be evaluated that there is a significant deviation.
[0096] Also, the fatigue evaluation unit 248 can evaluate the fatigue degree considering the objective fatigue degree D T and the subjective fatigue degree D O by using the comprehensive fatigue degree D S . For example, if the comprehensive fatigue degree D T is a value close to 100, the fatigue evaluation unit 248 can determine advice indicating that there is almost no fatigue and good physical performance can be exhibited. If the comprehensive fatigue degree D T is a value close to 0, the fatigue evaluation unit 248 can determine advice such as prompting rest.
[0097] Here, the setting of the numerical values for determining the advice to be presented shown in FIG. 6 is merely an example, and the fatigue evaluation unit 248 may set numerical values different from the example in FIG. 6. Also, the content of the advice shown in FIG. 6 is merely an example, and the fatigue evaluation unit 248 may have advice different from the example in FIG. 6.
[0098] Figure 7 is a graph showing the change in fatigue level in the embodiment. Figure 8 is a table showing the relationship between the change in fatigue level and the content of the advice in the embodiment. The change calculation unit 249 calculates the change from the previously calculated objective fatigue level and subjective fatigue level to the subsequently calculated objective fatigue level and subjective fatigue level. The change calculation unit 249 generates a vector (hereinafter referred to as the "fatigue level change vector") with the past fatigue level as the starting point and the current fatigue level as the ending point.
[0099] The fatigue evaluation unit 248 determines the advice to present based on the direction and magnitude of the fatigue level change vector generated by the change calculation unit 249. Specifically, the fatigue evaluation unit 249 determines the advice to present, for example, one that indicates the degree of physical recovery based on the magnitude of the horizontal axis component (objective fatigue level) of the fatigue level change vector, and one that indicates the degree of refreshment based on the magnitude of the vertical axis component (subjective fatigue level) of the fatigue level change vector.
[0100] The fatigue evaluation unit 248 uses the table shown in Figure 8 to select an adverb that expresses the degree of fatigue according to the magnitude of the fatigue change vector, and also selects the content of the advice according to whether the subjective fatigue level and the objective fatigue level are increasing or decreasing, thereby determining the final advice to present.
[0101] The fatigue evaluation unit 248 may further compare past fatigue level change vectors with current fatigue level change vectors. For example, while exercise generally causes the fatigue level change vector to point in the direction of increasing fatigue, the magnitude of the fatigue level change vector may become smaller than the previous fatigue level change vector even when performing the same exercise. In this case, especially if the change in objective fatigue level becomes smaller, the fatigue evaluation unit 248 may decide to provide advice such as advice that the body is adapting to the exercise, advice that muscle mass is increasing, or advice that nutritional intake was effective in combating fatigue. Also, if the change in subjective fatigue level becomes smaller, the fatigue evaluation unit 248 may decide to provide advice such as advice that mental strength has improved.
[0102] Furthermore, resting after exercise causes the fatigue level change vector to point in the direction of decreasing fatigue. However, even if the fatigue level was the same, the magnitude of the fatigue level change vector may be larger than the previous fatigue level change vector. In this case, if the change in objective fatigue level is particularly large, the fatigue evaluation unit 248 may decide to provide advice indicating that nutritional intake and rest were effective in combating fatigue. Also, if the change in subjective fatigue level is large, the fatigue evaluation unit 248 may decide to provide advice indicating that mental strength has been enhanced.
[0103] In this way, the fatigue evaluation unit 248 compares past fatigue level change vectors with current fatigue level change vectors and determines to provide advice based on the results, thereby enabling the person being measured to understand their own progress.
[0104] If the absolute value of fatigue is skewed, it is effective to relativize it based on the individual's past data. Therefore, the correction unit 247 corrects the overall fatigue level calculated by the overall fatigue level calculation unit 246 based on the individual's past overall fatigue level.
[0105] Figure 9A is a graph showing multiple past overall fatigue levels of a subject. Figure 9B is a graph showing multiple past overall fatigue levels after correction. The correction unit 247 fixes the overall fatigue level plotted in the upper right corner if the average value of the past overall fatigue level data is 50 or higher, and fixes the overall fatigue level plotted in the lower left corner if the average value of the overall fatigue level data is less than 50, and finds a conversion formula such that the average value of the past data becomes 50.
[0106] When a new total fatigue level is obtained, the correction unit 247 corrects the total fatigue level using the conversion formula determined above. This corrects any bias in the total fatigue level when it is calculated multiple times, allowing for the acquisition of an unbiased total fatigue level. For example, in individuals with small variations in fatigue levels, subtle changes in fatigue levels are difficult to capture due to the small variation. However, by applying this correction (intra-individual relativization), it becomes easier to capture changes within that individual.
[0107] In the examples in Figures 9A and 9B, the correction of the overall fatigue level was explained, but the correction unit 247 may also correct the objective fatigue level calculated by the objective fatigue level calculation unit 243. In this case as well, if the average value of the past data of objective fatigue levels is 50 or more, the correction unit 247 fixes the objective fatigue level plotted furthest to the right, and if the average value of the objective fatigue levels is less than 50, it fixes the objective fatigue level plotted furthest to the left, and finds a conversion formula such that the average value of the past data becomes 50.
[0108] Alternatively, the correction unit 247 may correct the subjective fatigue level calculated by the subjective fatigue level calculation unit 244. In this case as well, if the average value of past objective fatigue level data is 50 or higher, the correction unit 247 fixes the objective fatigue level plotted at the top, and if the average value of objective fatigue level data is less than 50, it fixes the objective fatigue level plotted at the bottom and finds a conversion formula such that the average value of past data becomes 50.
[0109] In these cases, the overall fatigue level calculation unit 246 calculates the corrected objective fatigue level D O Subjective fatigue level D SThe difference d is calculated using this method, and the difference d calculated in this way is compared with the corrected objective fatigue level D. O Subjective fatigue level D S Using and the overall fatigue level D T The fatigue evaluation unit 248 may calculate the following. Alternatively, it may use the corrected objective fatigue level and subjective fatigue level to determine the advice to present to the person being measured.
[0110] Furthermore, the correction unit 247 adjusts the subject's past objective fatigue level D O Subjective fatigue level D S Based on the trend, the fatigue evaluation unit 248 determines the threshold for the degree of difference d and the overall fatigue level D to determine the advice. T The threshold (see Figure 6) may be corrected. The fatigue evaluation unit 248 uses the corrected threshold to determine the difference d and the overall fatigue level D. T Determine the advice based on this.
[0111] Furthermore, the correction unit 247 may correct the baseline 41 based on past trends. For example, for subjects who tend to report higher subjective fatigue levels, the correction unit 247 may shift the baseline downwards in Figure 4.
[0112] Furthermore, the correction unit 247 may not only correct at least one of the total fatigue level, objective fatigue level, and subjective fatigue level based on the subject's past trends, but may also correct at least one of the total fatigue level, objective fatigue level, and subjective fatigue level based on its correlation with the subject's performance. For example, if the subject's performance is high, the correction unit 247 may adjust the calculated subjective fatigue level D of the subject. S and objective fatigue level D O The calculation may be corrected so that at least one of the two values is lower. Alternatively, for example, the correction unit 247 may correct the calculation so that the overall fatigue level is lower if the subject's performance is high.
[0113] By making these adjustments, for example, it becomes easier to calculate fatigue levels correlated with performance for each individual, making it easier to aim for conditions that enhance performance. The performance of the person being measured is a concept that includes the ability, achievements, results, and results that the person being measured can demonstrate in exercise. The level of a person's performance may be determined based on the results of matches or selections, or it may be determined based on evaluations by the person being measured themselves or by people around the person being measured (such as coaches or managers). The fatigue evaluation system may further include means for determining the level of a person's performance in this way.
[0114] Furthermore, for subjects who perform better when there is a slight discrepancy between objective and subjective values, the correction unit 247 may adjust the reference line 41 in Figure 4 vertically or horizontally, correct the slope of the reference line 41, or form the reference line 41 as a curve. For example, the correction unit 247 may adjust the subject's past performance and the subject's past objective fatigue level D O and subjective fatigue level D S And, by analyzing this, we can determine the objective fatigue level D that has a strong correlation with performance. O and subjective fatigue level D S A straight or curved line passing through the combination may be reformed as the reference line 41. The correction unit 247 may also reform the reference line 41 at unit intervals.
[0115] The memory device 22 stores the objective fatigue level D calculated by the arithmetic unit 24. O Subjective fatigue level D S , and overall fatigue level D T The fatigue level change vector generated by the change calculation unit 249 is stored.
[0116] The fatigue evaluation unit 248 further reads past objective fatigue levels, subjective fatigue levels, and overall fatigue levels stored in the memory device 22 and generates a graph showing their trends as presentation information.
[0117] Figure 10 is a graph showing the historical changes in fatigue levels in the embodiment. In the graph of Figure 10, the horizontal axis represents the date, and the vertical axis represents objective fatigue level, subjective fatigue level, and overall fatigue level. In the graph of Figure 10, the higher the vertical axis (fatigue level), the less fatigue has accumulated, i.e., the better the condition. This graph allows the person being measured to intuitively understand the changes in each fatigue level. Furthermore, by setting match days or selection days on the application's calendar where the user wants to be in top condition, these days will be marked on the graph, encouraging the user to take action to condition themselves to be fatigue-free on those days.
[0118] Figure 11 is a graph showing the past fatigue levels of the embodiment. The fatigue evaluation unit 248 displays the objective fatigue level trend up to the present and generates presentation information showing the objective fatigue level trend of past good examples as the target future objective fatigue level. To do this, the person being measured first specifies on the application the past day when they performed at their best and the future date (for example, a match day or selection day) on which they want to perform at their best.
[0119] The fatigue evaluation unit 248 calculates the number of days from the present to a specified future date and reads the past objective fatigue levels for that number of days from the specified past date from the storage device 22. The fatigue evaluation unit 248 generates a graph as presentation information that shows the changes in the read past objective fatigue levels, along with the changes in objective fatigue levels up to the present, as well as the changes in the target objective fatigue levels from the present to the future.
[0120] By reviewing this information, the subject can plan their training, rest, and other conditioning activities from that day forward to ensure their objective fatigue level follows a similar trend to past trends. The fatigue evaluation unit 248 determines conditioning advice based on the current objective fatigue level and the target objective fatigue level trend. For example, it may advise increasing exercise volume during periods when it would be beneficial to increase fatigue, and encourage rest during periods of recovery. The fatigue evaluation unit 248 may also correct and present past trends by converting favorable past trends to current actual values, rather than simply overlaying them.
[0121] In the example shown in Figure 11, the fatigue evaluation unit 248 generated presentation information for the objective fatigue level, but instead, it may similarly generate presentation information for the overall fatigue level. In this case, the fatigue evaluation unit 248 reads past overall fatigue levels stored in the memory device 22, shows the trend of overall fatigue levels up to the present, and generates presentation information showing the trend of overall fatigue levels of past good examples as the target future overall fatigue level.
[0122] Furthermore, since subjective fatigue levels are easily manipulated by bias, it is preferable to use objective fatigue levels or overall fatigue levels when determining conditioning advice. By checking the trend of overall fatigue levels, a general target for fatigue progression can be determined. In addition, by checking the trend of objective fatigue levels, it is possible to make decisions about actions such as how much exercise load to include in the training menu on a given day and how much sleep to ensure.
[0123] The display device 25 displays the objective fatigue level, subjective fatigue level, and overall fatigue level obtained by the calculation unit 24, and also displays advice determined by the fatigue evaluation unit 248 based on these levels. The display device 25 also displays the fatigue level change vector generated by the change calculation unit 249, and the advice determined by the fatigue evaluation unit 248 according to the fatigue level change vector. Furthermore, the display device 25 displays information on the progression of each fatigue level generated by the fatigue evaluation unit 248, information on the target future fatigue level progression, and advice determined by the fatigue evaluation unit 248 as related advice.
[0124] Figure 12 is a flowchart of the fatigue evaluation method using the fatigue evaluation system of the embodiment. The example in Figure 12 shows an example of providing advice based on the overall fatigue level. First, the person being measured starts the fatigue evaluation program (step S121). The person being measured inputs answers to several questions for calculating the subjective fatigue level via the input device 23 (step S122). The answer acquisition unit 242 acquires the answers entered into the input device 23. The subjective fatigue level calculation unit 244 calculates the subjective fatigue level based on the answers acquired by the answer acquisition unit 242 (step S123).
[0125] The person being measured activates the biomechanism 10 (step S124). The weight measuring device 11 of the biomechanism 10 measures the person's weight (step S125). Then, the bioelectrical impedance measuring device 12 measures the person's bioelectrical impedance (step S126). The objective fatigue level calculation unit 243 calculates the objective fatigue level based on the weight and bioelectrical impedance measured by the biomechanism 10 and acquired from the biomedical information acquisition unit 241 (step S127).
[0126] The correction unit 247 corrects the subjective fatigue level calculated by the subjective fatigue level calculation unit 244 by converting it using a conversion formula based on multiple past subjective fatigue levels (step S128). The difference calculation unit 245 calculates the difference between the objective fatigue level calculated by the objective fatigue level calculation unit 243 and the subjective fatigue level calculated by the subjective fatigue level calculation unit and corrected by the correction unit 247 (step S129). The overall fatigue level calculation unit 246 calculates the overall fatigue level using the objective fatigue level calculated by the objective fatigue level calculation unit 243, the subjective fatigue level calculated by the subjective fatigue level calculation unit and corrected by the correction unit 247, and the difference calculated by the difference calculation unit 245 (step S130).
[0127] The fatigue evaluation unit 248 determines the advice to be presented based on the overall fatigue level calculated by the overall fatigue level calculation unit (step S131). The display device 25 presents the advice determined by the fatigue evaluation unit 248 to the person being measured by displaying it (step S132).
[0128] In the example in Figure 12, the subjective fatigue level is entered first (step S122), followed by the measurement of biological information for calculating the objective fatigue level (steps S125, S126). However, the input of the answers and the measurement of biological information may be performed simultaneously, in parallel, or at different times. The calculation of the subjective fatigue level (step S123) and the calculation of the objective fatigue level (step S127) may be performed in any order. However, as in the example in Figure 12, by inputting the subject's answers (step S122) before calculating the objective fatigue level (step S127), bias on the subject can be eliminated. That is, if the subject knows their objective fatigue level first and then inputs the answers for calculating the subjective fatigue level, they tend to input a value close to their objective fatigue level for that day, but this bias is eliminated.
[0129] As described above, the fatigue evaluation system 100 of this embodiment can evaluate fatigue levels by taking into account the difference between objective fatigue levels and subjective fatigue levels, and then provide advice.
[0130] In the above embodiment, the fatigue evaluation system 100 was described assuming the management or conditioning of athlete fatigue, but the fatigue evaluation system 100 is also effective when applied to users other than athletes. [Explanation of Symbols]
[0131] 100 Fatigue Assessment System 10. Biometric Measurement Devices 101 Front electrode for left foot 102 Rear electrode for left foot 103 Front electrode for right foot 104 Rear electrode for right foot 105 Display Panel 11. Weight Measurement Section 12. Bioelectrical Impedance Measurement Device 13. Communication equipment 20 Fatigue evaluation device 21 Communication equipment 22 Storage device 23 Input device 24 Arithmetic unit 241 Biological Information Acquisition Unit 242 Answer acquisition part 243 Objective Fatigue Level Calculation Unit 244 Subjective Fatigue Level Calculation Unit 245 Dissimilarity Calculation Unit 246 Overall Fatigue Level Calculation Unit 247 Correction Unit 248 Fatigue Evaluation Department 249 Change Calculation Unit 25 Display device 41. Reference Line
Claims
1. A fatigue evaluation device for evaluating the fatigue of a subject, An objective fatigue level acquisition unit that acquires the objective fatigue level of the person being measured, A subjective fatigue level acquisition unit that acquires the subjective fatigue level of the person being measured, A fatigue evaluation unit that evaluates the fatigue of the subject based on a standard determined based on the objective fatigue level and the subjective fatigue level of the subject, according to the degree of difference between the subject's objective fatigue level and / or subjective fatigue level. Equipped with, The fatigue evaluation unit is a fatigue evaluation device that calculates the difference between the objective fatigue level and / or the subjective fatigue level of the person being measured and the standard as the degree of difference.
2. The fatigue level evaluation device according to claim 1, wherein the objective fatigue level acquisition unit calculates the objective fatigue level based on the biological information acquired from the person being measured.
3. The fatigue evaluation device according to claim 1, wherein the subjective fatigue acquisition unit calculates the subjective fatigue level based on the answers to questions about fatigue level obtained from the person being measured.
4. The fatigue evaluation device according to claim 1, wherein the aforementioned standard is a state in which the objective fatigue level and the subjective fatigue level coincide.
5. The fatigue evaluation device according to claim 1, wherein the fatigue evaluation unit performs different evaluations depending on whether the objective fatigue level of the person being measured is greater than the standard or whether the subjective fatigue level of the person being measured is greater than the standard.
6. The fatigue evaluation device according to claim 1, wherein the fatigue evaluation unit evaluates the fatigue of the person being measured according to the magnitude of the difference.
7. The system further includes a total fatigue calculation unit that calculates the total fatigue level based on the objective fatigue level of the subject being measured, the subject's subjective fatigue level, and the difference level. The fatigue evaluation device according to claim 1, wherein the fatigue evaluation unit evaluates the fatigue of the person being measured according to the overall fatigue level.
8. The fatigue evaluation apparatus according to claim 1, further comprising a correction unit that corrects the objective fatigue level of the subject calculated by the objective fatigue level acquisition unit based on the subject's past objective fatigue levels.
9. The fatigue evaluation apparatus according to claim 1, further comprising a correction unit that corrects the subjective fatigue level of the person being measured calculated by the subjective fatigue level acquisition unit based on the subject's past subjective fatigue levels.
10. The fatigue evaluation apparatus according to claim 7, further comprising a correction unit that corrects the total fatigue level calculated by the total fatigue level calculation unit based on the past total fatigue levels of the person being measured.
11. The fatigue evaluation apparatus according to claim 1, further comprising a correction unit that corrects at least one of the objective fatigue level and the subjective fatigue level of the person being measured, calculated by the objective fatigue level acquisition unit, based on the performance of the person being measured.
12. The fatigue evaluation apparatus according to claim 7, further comprising a correction unit that corrects the overall fatigue level calculated by the overall fatigue level calculation unit based on the performance of the person being measured.
13. The fatigue evaluation device according to claim 1, further comprising a difference calculation unit that calculates the difference as the objective fatigue level of the subject and the amount of correction to the objective fatigue level of the subject necessary to make the subject's objective fatigue level and subject's subject's subjective fatigue level match the standard.
14. The fatigue evaluation device according to claim 1, further comprising a difference calculation unit that calculates the amount of correction to the objective fatigue level of the subject to be measured, which is necessary to make the objective fatigue level of the subject to be measured and the subject's subjective fatigue level match the standard, as the difference.
15. The fatigue evaluation device according to claim 1, further comprising a difference calculation unit that calculates the amount of correction to the subjective fatigue level of the person being measured, which is necessary to make the objective fatigue level of the person being measured and the subjective fatigue level of the person being measured match the standard, as the difference.
16. The fatigue evaluation apparatus according to claim 1, wherein the fatigue evaluation unit further determines advice according to the evaluation.
17. The fatigue evaluation device according to claim 1, further comprising a change calculation unit that calculates the change from the objective fatigue level and subjective fatigue level of the subject calculated previously to the objective fatigue level and subjective fatigue level of the subject calculated thereafter.
18. The fatigue evaluation device according to claim 17, wherein the fatigue evaluation unit determines advice in accordance with the changes.
19. The fatigue evaluation device according to claim 1, further comprising: a fatigue evaluation unit that displays the trend of the objective fatigue level of the subject to be measured up to the present; and generates a target future objective fatigue level of the subject based on the trend of objective fatigue levels of past good examples of the subject to be measured.
20. The fatigue evaluation device according to claim 7, further comprising a fatigue evaluation unit that generates presentation information showing the trend of the overall fatigue level up to the present, and showing the trend of the overall fatigue level of past good examples as the target future overall fatigue level.
21. A fatigue assessment system for evaluating the fatigue of a subject, An objective fatigue level acquisition unit that acquires the objective fatigue level of the person being measured, A subjective fatigue level acquisition unit that acquires the subjective fatigue level of the person being measured, A fatigue evaluation unit that evaluates the fatigue of the subject based on a standard determined based on the objective fatigue level and the subjective fatigue level of the subject, according to the degree of difference between the subject's objective fatigue level and / or subjective fatigue level. Equipped with, The fatigue evaluation unit is a fatigue evaluation system that calculates the difference between the objective fatigue level and / or the subjective fatigue level of the person being measured and the standard as the degree of difference.
22. A fatigue assessment program that evaluates the fatigue of a subject, and which uses a computer to evaluate the fatigue of a subject. An objective fatigue level acquisition step to acquire the objective fatigue level of the subject being measured, A subjective fatigue level acquisition step to acquire the subjective fatigue level of the person being measured, A fatigue evaluation step in which the fatigue of the subject being measured is evaluated according to the degree of difference between the subject's objective fatigue level and / or subject's subjective fatigue level, based on a standard determined based on the subject's objective fatigue level and subjective fatigue level, Make it run, The fatigue evaluation step is a fatigue evaluation program that calculates the difference between the objective fatigue level and / or the subjective fatigue level of the subject being measured and the standard as the degree of difference.
23. A fatigue assessment method for evaluating the fatigue of a subject, An objective fatigue level acquisition step to acquire the objective fatigue level of the subject being measured, A subjective fatigue level acquisition step to acquire the subjective fatigue level of the person being measured, A fatigue evaluation step in which the fatigue of the subject being measured is evaluated according to the degree of difference between the subject's objective fatigue level and / or subject's subjective fatigue level, based on a standard determined based on the subject's objective fatigue level and subjective fatigue level, Includes, The fatigue evaluation step is a fatigue evaluation method that calculates the difference between the objective fatigue level and / or the subjective fatigue level of the person being measured and the standard as the degree of difference.