WO2021177411A1 - Body composition measurement device, body composition estimation device, system, computer program, and non-transitory computer-readable storage medium - Google Patents

Abstract

The present disclosure provides a body composition measurement device and a body composition estimation device with which it is possible to smoothly carry out a transition of a body composition value from a body composition value of an old body composition measurement device. A second body composition measurement device (20) comprises: an acquisition unit (26) for acquiring a first body composition value obtained by a first body composition measurement device (10) in the past; a measurement unit (22) for obtaining a second measurement value by measuring a host body; an estimation unit (23) for estimating a second body composition value from the second measurement value according to a second computation; a correction unit (27) for correcting the first body composition value and/or the second body composition value through a correction method that conforms to one or a plurality of parameters, in order to make the transition from the first body composition value to the second body composition value smoother; and an input unit (21) for receiving an input, made by a user, for designating the one or plurality of parameters.

Description

Body composition analyzers, body composition analyzers, systems, computer programs, and computer-readable non-temporary storage media Cross-reference of related applications

This application claims the interests of patent application number 2020-037300 filed in Japan on March 4, 2020, and the content of the application is incorporated herein by reference.

The present disclosure relates to a body composition measuring device for measuring the body composition value of the body, a body composition estimating device for estimating the body composition value from the measured value of the body, a system, a computer program, and a computer-readable non-temporary storage medium.

Conventionally, a body composition measuring device that measures (estimates) body composition values such as body fat percentage and muscle mass by measuring bioelectric impedance between predetermined parts of the body and combining information such as height, weight, age, and gender. It has been known. By storing the body composition values measured in the past with this body composition measuring device and arranging them in chronological order, the transition of the body composition values can be confirmed. Some body composition measuring devices have a function of storing such past body composition values and displaying the transition of the body composition values.

By confirming such a transition of the body composition value, the user can take an action for improving or maintaining the body composition value such as exercise and diet, or the user's trainer can take an action for improving or maintaining the body composition value. By confirming the transition, it is possible to instruct actions for improving or maintaining the body composition value.

Body composition is estimated by performing certain calculations using body measurements (eg, bioelectrical impedance) and other information. The calculation formula of this estimation calculation may differ depending on the body composition measuring device. Therefore, when a user using a certain body composition measuring device switches to a new body composition measuring device and uses it, the body composition value obtained by the old body composition measuring device and the new body are obtained. A relatively large deviation may occur from the body composition value obtained by the composition measuring device. In addition, even when the same body composition measuring device is used, when the calculation formula is changed or updated, it is the same as the past body composition value when switching to a new body composition measuring device. There may be a discrepancy with the new body composition value. In these cases, the user cannot determine whether this relatively large dissociation is due to a difference in the body composition measuring device or a change in his / her own body, which is confusing.

In addition, when a user who has a tendency to decrease a predetermined body composition value obtained by an old body composition measuring device changes to a new body composition measuring device, the body composition value may increase. could be.

Summary of disclosure

In Japanese Unexamined Patent Publication No. 2018-81439, the body weight measured by the body composition analyzer and the calculated body composition value calculated by the body composition analyzer are taken into a smartphone, and a body composition value other than the calculated body composition value is derived by the smartphone. However, even if this technique is used, the transition from the body composition value of the old body composition analyzer to the body composition value of the new body composition analyzer cannot be smoothed.

Therefore, an object of the present disclosure is to provide a body composition measuring device and a body composition estimating device that can smoothly transition the body composition value from the body composition value of the old body composition measuring device.

The body composition measuring device of one aspect of the present disclosure includes a measuring unit that measures the user's body to obtain a second measured value, and a second body composition value using a predetermined estimation method from the second measured value. The estimation unit that estimates the above, the acquisition unit that acquires the first body composition value of the user obtained by another device in the past, and the transition from the first body composition value to the second body composition value. It has a configuration including a correction unit for correcting at least one of the first body composition value and the second body composition value by a correction method according to one or a plurality of parameters in order to make the above smooth.

With this configuration, the first body composition value so that the transition from the first body composition value obtained by another device in the past to the second body composition value obtained by the new body composition measuring device becomes smooth. And / or the second body composition value is modified.

The body composition measuring device may further include an input unit that accepts inputs for designating the one or more parameters.

With this configuration, parameters used for modifying the body composition value can be specified, so that the modification can be performed according to the intention of the user or any person.

In the above body composition measuring device, the acquisition unit may further acquire the first measured value used by the other device to estimate the first body composition value, and the estimation unit may obtain the first measured value. The past second body composition value may be estimated from the first measured value by using the same estimation method as the predetermined estimation method, and the correction unit may use the past second body composition value. , The first body composition value may be modified.

With this configuration, it should have been obtained if the second body composition value in the past, that is, the second calculation in the past, was estimated from the first measurement value of the other device used in the past by the second calculation. Estimate the body composition value of and use this past second body composition value (for example, between the past second body composition value and the first body composition value obtained by an actual other device). Since the first body composition value is modified (so that it becomes the value of), the transition from the first body composition value to the second body composition value becomes smooth.

In the above body composition measuring device, the acquisition unit may acquire a plurality of the first body composition values having different estimation times, and the correction unit is modified as the older the first body composition value is. The first body composition value may be modified by weighting so that the degree of the body composition is reduced.

With this configuration, the first body composition value is corrected by weighting so that the degree of correction of the plurality of first body composition values obtained in the time series becomes smaller as it approaches the present. The transition from the body composition value to the second body composition value becomes smooth.

In the above body composition measuring device, the correction unit may modify the second body composition value based on the first body composition value and the second body composition value.

With this configuration, since the body composition value of the new body composition measuring device is modified, it is not necessary to modify the past body composition value, or the degree of modification of the past body composition value can be reduced.

In the above body composition measuring device, the correction unit weights the second body composition value so that the longer the elapsed time from the estimation of the first body composition value, the smaller the degree of correction of the second body composition value. The second body composition value may be modified.

With this configuration, when the second body composition value is modified, the longer the elapsed time from the first first body composition value in the past, the smaller the degree to which the second body composition value is modified is reduced, so that the passage of time As a result, the second body composition value estimated by the estimation unit can be gradually approached.

In the above body composition measuring device, the parameter may include a parameter for designating whether the first body composition value is emphasized or the second body composition value is emphasized.

With this configuration, the user is estimated by the estimation unit whether to allow a relatively rapid change from the first body composition value to the second body composition value with an emphasis on the past first body composition value. In addition, it is possible to select whether to suppress a relatively rapid change from the first body composition value to the second body composition value by emphasizing the second body composition value.

In the above body composition measuring apparatus, the parameter includes a parameter for designating a high or low reproducibility of the fluctuation tendency of the first body composition value and / or the second body composition value before and after the modification. You can go out.

With this configuration, the user can specify how much the fluctuation tendency of the first body composition value and / or the second body composition value is reproduced.

In the above body composition measuring device, the parameter may include a parameter for designating at least one of the start point and the end point of the modification period.

With this configuration, the range of modification can be specified. For example, the oldest first body composition value to be modified can be specified as a start point, and the newest second body composition value to be modified can be specified as an end point. In particular, when the end point of the second body composition value to be corrected is specified, how long the second body composition value should be corrected, or the second body composition from the first body composition value in the past. You can specify how smooth the transition to the value is. It should be noted that either the start point or the end point of the correction period may be specified, or only one of them may be specified.

The body composition estimation device of one aspect of the present disclosure includes an estimation unit that estimates a second body composition value from a second measurement value obtained by measuring the user's body using a predetermined estimation method, and a past. The acquisition unit that acquires the first body composition value obtained by another device, and the first body in order to smooth the transition from the first body composition value to the second body composition value. It has a configuration including a correction portion for correcting at least one of the composition value and the second body composition value by a correction method according to one or a plurality of parameters.

Even with this configuration, the first body composition is such that the transition from the first body composition value obtained by another device in the past to the second body composition value obtained by the new body composition measuring device is smooth. The value and / or the second body composition value is modified.

The system of one aspect of the present disclosure acquires the first body composition value of the user obtained by the first body composition analyzer in the past, and the second body composition value of the user obtained by the second body composition device. In order to smooth the transition from the first body composition value to the second body composition value, the acquisition unit for acquiring the body composition value of the first body composition value and the second body composition value. It has a configuration including a correction unit that corrects at least one of the values by a correction method according to one or a plurality of parameters.

Even with this configuration, the first body composition is such that the transition from the first body composition value obtained by another device in the past to the second body composition value obtained by the new body composition measuring device is smooth. The value and / or the second body composition value is modified.

The computer program of one aspect of the present disclosure is obtained by measuring the user's body with the body composition measuring device by the measuring unit of the body composition measuring device by executing the computer program of the body composition measuring device. An estimation unit that estimates a second body composition value from a second measured value using a predetermined estimation method, an acquisition unit that acquires a first body composition value previously obtained by another device, and the first In order to smooth the transition from the body composition value of the body to the second body composition value, at least one of the first body composition value and the second body composition value is modified according to one or a plurality of parameters. It has a configuration that functions as a correction unit for correction.

Even with this configuration, the first body composition is such that the transition from the first body composition value obtained by another device in the past to the second body composition value obtained by the new body composition measuring device is smooth. The value and / or the second body composition value is modified.

The above computer program is stored in the computer-readable non-temporary storage medium of one aspect of the present disclosure.

FIG. 1 is a block diagram showing a configuration of an old body composition measuring device and a body composition measuring device of the embodiment of the present disclosure used in place of the old body composition measuring system. FIG. 2 is an external view of the second body composition measuring device according to the embodiment of the present disclosure. FIG. 3 is a graph illustrating a modification in the modification section of the second body composition measuring device according to the embodiment of the present disclosure. FIG. 4 is a graph showing body composition values modified by the second body composition measuring device according to the embodiment of the present disclosure. FIG. 5 is a graph showing another example of the body composition value modified by the second body composition measuring device according to the embodiment of the present disclosure. FIG. 6 is a diagram showing an example of a screen for instructing a correction parameter in the second body composition measuring device according to the embodiment of the present disclosure. FIG. 7 is a diagram illustrating an example of the effect on the modified first body composition value when the weight function of the embodiment of the present disclosure is adjusted. FIG. 8 is a diagram illustrating an example of the effect on the modified first body composition value when the weight function of the embodiment of the present disclosure is adjusted. FIG. 9 is a diagram illustrating an example of the effect on the modified first body composition value when the weight function of the embodiment of the present disclosure is adjusted. FIG. 10 is a diagram illustrating an example of the effect on the modified first body composition value when the initial value of the weight of the embodiment of the present disclosure is adjusted. FIG. 11 is a diagram illustrating an example of the effect on the modified first body composition value when the initial value of the weight of the embodiment of the present disclosure is adjusted. FIG. 12 is a diagram illustrating an example of the effect on the modified first body composition value when the initial value of the weight of the embodiment of the present disclosure is adjusted. FIG. 13 is a flowchart showing an example of a processing flow in the second body composition measuring apparatus according to the embodiment of the present disclosure. FIG. 14 is a graph showing body composition values modified by the second body composition measuring device of the modified example of the embodiment of the present disclosure. FIG. 15 is a diagram showing an example of a screen for instructing a correction parameter in the second body composition measuring device of the modified example of the embodiment of the present disclosure.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be noted that the embodiments described below show an example of the case where the present disclosure is carried out, and the present disclosure is not limited to the specific configuration described below. In carrying out the present disclosure, a specific configuration according to the embodiment may be appropriately adopted. In this specification, in order to obtain a body composition, a measurement of the body (for example, measurement of bioelectrical impedance between predetermined parts of the body) is performed, and a calculation is performed from the measured value (for example, the measured value is calculated by a predetermined regression equation). A device / system that obtains a body composition value by (substituting into) is called a body composition measuring device / system, and a device / system that estimates a body composition by acquiring a measured value from the outside without performing measurement is called a body composition estimation device / system. It is called a device / system.

FIG. 1 is a block diagram showing a configuration of an old body composition measuring device and a body composition measuring device of the embodiment of the present disclosure used in place of the old body composition measuring device. In FIG. 1, the first body composition measuring device 10 is an old body composition measuring device, the second body composition measuring device 20 is a new body composition measuring device, and the first body composition measuring device 10 is used. It is assumed that the user switches to the second body composition measuring device 20.

The present disclosure is not limited to the case where there are two old and new body composition measuring devices, for example, when the calculation method for body composition estimation described later is changed or updated in one body composition measuring device. The present disclosure can be applied by using the body composition measuring device before the calculation method change as the old body composition measuring device and the body composition measuring device after the calculation method change as the new body composition measuring device. That is, the concept of the past measured value or body composition value and the new measured value or body composition value in the present specification is the measured value or body composition value obtained before and after the switching when the body composition measuring device to be used is switched. Not only that, it also includes the measured values or body composition values obtained before and after the change when the calculation method is changed.

The first body composition measuring device 10 includes an input unit 11, a measuring unit 12, an estimating unit 13, a storage unit 14, a display unit 15, and an output unit 16. The input unit 11 and the display unit 15 are configured as a touch panel, and the input unit 11 is configured so that the user can input various instructions in relation to the display contents by the display unit 15.

Like the first body composition measuring device 10, the second body composition measuring device 20 includes an input unit 21, a measuring unit 22, an estimating unit 23, a storage unit 24, and a display unit 25. .. The second body composition measuring device 20 further includes an acquisition unit 26 and a correction unit 27.

FIG. 2 is an external view of the second body composition measuring device according to the embodiment of the present disclosure. In the present embodiment, it is assumed that the first body composition measuring device 10 and the second body composition measuring device 20 are different types of body composition measuring devices, but their appearance configurations are similar. Therefore, the second body composition measuring device 20 will be described as an example.

The second body composition measuring device 20 of the present embodiment is provided with a mounting table 210 on which the user (measured person) U rests at the lower part, and is provided on a main body portion 230 provided at the upper end of a support column 220 rising from the mounting table 210. It is equipped with a touch display 240. Further, a right hand grip 260R and a left hand grip 260L are connected to the main body 230 via a cable 250, respectively. As shown in FIG. 2, the user U stands on the platform 210, holds the right hand grip 260R with his right hand, and holds the left hand grip 260L with his left hand to measure the body composition. The measurement result is displayed on the touch display 240.

The mounting table 210 is provided with electrodes 211a to 211d for the front right foot, the rear right foot, the front left foot, and the rear left foot. Although not shown in FIG. 2, the right hand grip 260R is provided with an electrode for the right palm and an electrode for the right finger, and the left hand grip 260L is provided with an electrode for the left palm and an electrode for the left finger. Electrodes are provided. As described above, the second body composition measuring device 20 is provided with eight electrodes for contacting a predetermined part of the body.

Hereinafter, the configuration of the second body composition measuring device 20 will be described with reference to FIGS. 1 and 2. The input unit 21 and the display unit 25 of the second body composition measuring device 20 are configured as the touch display 240, and the input unit 21 receives various instruction inputs from the user U in relation to the display contents of the display unit 25. The measuring unit 22 includes the above eight electrodes. These electrodes are divided into an energizing electrode and a measuring electrode, and the measuring unit 22 further includes a circuit for energizing the energizing electrode and a circuit for measuring the potential difference between the measuring electrodes.

The measuring unit 22 further includes a load cell for measuring the weight of the user U. The load cell is composed of a strain-causing body of a metal member that deforms according to a load and a strain gauge attached to the strain-causing body. When the user rides on the platform 210, the strain gauge of the load cell bends due to the load of the user, and the strain gauge expands and contracts. The resistance value (output value) of the strain gauge changes according to its expansion and contraction.

The estimation unit 23 and the correction unit 27 are realized by the arithmetic processing unit built in the main body unit 230 executing a predetermined computer program. The storage unit 24 is also built in the main body unit 230. The storage unit 24 is composed of a storage device such as an SSD or an HDD. The storage unit 24 may be a portable storage medium that can be attached to and detached from the main body unit 230. The arithmetic processing unit reads and writes information to the storage unit 24. Even if the touch display 240 (input unit 21, display unit 25), arithmetic processing unit (estimation unit 23, correction unit 27), and storage device (storage unit 24) are integrated into a tablet computer. good. The computer program may be stored in the storage unit 24 in advance, may be downloaded by the arithmetic processing device via the network and stored in the storage unit 24, or may be stored in the storage unit 24 via a portable non-temporary storage medium. It may be stored in a storage unit.

The acquisition unit 26 may be configured as an external connection interface provided in the main body 230, as a slot for a portable storage medium, or as a wireless or wired communication interface. .. In either case, it is possible to take in information from the outside and pass it to the arithmetic processing unit. The output unit 16 of the first body composition measuring device 10 may also be configured as an external connection interface, as a slot for a portable storage medium, or wirelessly, like the acquisition unit 26. Alternatively, it may be configured as a wired communication interface.

Hereinafter, the functions of each part will be described with reference to FIG. The input unit 11 of the first body composition measuring device 10 receives various instruction inputs from the user. For example, the user can input the operation instruction of the first body composition measuring device 10 via the input unit 11. Further, as described later, in order to measure the body composition, it is necessary to input information such as the height, age, and gender of the user, and such information can also be input from the input unit 11.

The measuring unit 12 measures the bioelectrical impedance between predetermined parts of the user's body and obtains a measured value. Further, the measuring unit 12 calculates the body 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 estimation unit 13 estimates the first body composition value by the first calculation from the measured values (bioelectrical impedance and body weight between each part) obtained by the measuring unit 12.

The measuring unit 12 has a current supply function of passing a weak current of a predetermined frequency from each energizing electrode to a predetermined part of the body of the user U, a potential difference measuring function of measuring a potential difference generated in a current path, and such a current and It has a bioelectric impedance calculation function that calculates the bioelectric impedance of the user's whole body and each body part based on each value of the potential difference.

The measurement of the bioelectrical impedance of the whole body and each body part of the user U by the measuring unit 12 is performed as follows, for example.
(1) In the measurement of the bioelectrical impedance of the whole body, a current is supplied using the left hand energizing electrode and the left foot energizing electrode, and the left hand is contacted in the current path flowing through the left hand, the left arm, the chest, the abdomen, the left leg, and the left foot. The potential difference between the left hand measurement electrode being used and the left foot measurement electrode in contact with the left foot is measured.
(2) In the measurement of the bioelectrical impedance of the right leg, current is supplied using the right hand energizing electrode and the right foot energizing electrode, and in the current path flowing through the right hand, right arm, chest, abdomen, right leg, and right foot, to the left foot. The potential difference between the left foot measurement electrode in contact and the right foot measurement electrode in contact with the right foot is measured.
(3) In the measurement of the bioelectrical impedance of the left leg, a current is supplied using the left hand energizing electrode and the left foot energizing electrode, and in the current path flowing through the left hand, the left arm, the chest, the abdomen, the left leg, and the left foot, the left foot is subjected to the current path. The potential difference between the left foot measurement electrode in contact and the right foot measurement electrode in contact with the right foot is measured.
(4) In the measurement of the bioelectrical impedance of the right arm, a current is supplied using the right hand energizing electrode and the right foot energizing electrode, and the current is contacted with the left hand in the current path flowing through the right hand, the right arm, the chest, the abdomen, the right leg, and the right foot. Measure the potential difference between the left-hand measurement electrode that is in contact with the right-hand measurement electrode and the right-hand measurement electrode that is in contact with the right hand.
(5) In the measurement of the bioelectrical impedance of the left arm, a current is supplied using the left hand energizing electrode and the left foot energizing electrode, and the left hand is contacted in the current path flowing through the left hand, the left arm, the chest, the abdomen, the left leg, and the left foot. Measure the potential difference between the left-hand measurement electrode that is in contact with the right-hand measurement electrode and the right-hand measurement electrode that is in contact with the right hand.

The estimation unit 13 calculates by applying the height of the user U input from the input unit 11, the weight measured by the measurement unit 12, and each bioelectric impedance measured by the measurement unit 12 to a predetermined regression equation. By doing so, the body composition value for the whole body and each body part is estimated. This regression equation is stored in the estimation unit 13 for each age and gender of the user. As body composition values, the estimation unit 13 includes fat content, fat mass, lean mass, muscle mass, visceral fat mass, visceral fat level, visceral fat area, subcutaneous fat mass, basal metabolic rate, bone mass, and body water content. Estimate BMI, intracellular fluid volume, and extracellular fluid volume. The estimation unit 13 stores the above regression equation for each of these body compositions. As for the configuration related to the calculation of the body composition value, the same configuration as that of a general body composition analyzer can be used.

In the following, the measured value obtained by the measuring unit 12 is referred to as a first measured value, and the calculation for estimating the body composition value from the first measured value in the estimating unit 13 is referred to as a first calculation. The body composition value estimated from the first measured value by calculation is called the first body composition value.

The display unit 15 displays each first body composition value estimated by the estimation unit 13. The storage unit 14 stores each first body composition value estimated by the estimation unit 13 together with information on the date and time of measurement for each user. In addition, the storage unit 14 also stores information on the first measured value (bioelectric impedance and body weight) used for estimating the first body composition value in association with the first body composition value. .. In this way, the storage unit 14 stores the past first body composition value and the first measured value together with the date and time for each user. By identifying the user, the first body composition measuring device 10 can display the transition of the first body composition value of the user from the past.

The output unit 16 outputs information including the body composition value, the measured value, and the date and time of each user stored in the storage unit 14 to the outside. The output method may be any of transmission using an external connection interface, a method via a portable storage medium, and a method by communication.

The input unit 21, the measuring unit 22, the estimating unit 23, the storage unit 24, and the display unit 25 of the second body composition measuring device 20 are the input unit 11, the measuring unit 12, and the above-mentioned first body composition measuring device 10. It has the same functions as the estimation unit 13, the storage unit 14, and the display unit 15, respectively. In the following, the measured value obtained by the measuring unit 22 is referred to as a second measured value, and the calculation for estimating the body composition value from the second measured value in the estimating unit 23 is referred to as a second calculation. The body composition value estimated from the second measured value by calculation is called the second body composition value.

The acquisition unit 26 acquires the information output from the output unit 16 of the first body composition measuring device 10. The acquisition method may be any of transmission using an external connection interface, a method via a portable storage medium, and a method by communication.

The estimation unit 23 of the second body composition measuring device 20 is second by a second calculation from the second measured value obtained by the measuring unit 22 in the same manner as the measuring unit 12 of the first body composition measuring device 10. In addition to estimating body composition values, it also has the following functions. That is, the estimation unit 23 performs the second calculation on the first measurement value acquired by the acquisition unit 26, so that the second body composition value in the past, that is, the second body composition measurement device 20 in the past The body composition value that would have been obtained if it had been estimated by the estimation unit 23 of the above is estimated.

The correction unit 27 modifies the first body composition value by a correction method according to a plurality of parameters in order to smooth the transition from the first body composition value to the second body composition value. Specifically, the correction unit 27 modifies the first body composition value so that the value is between the first body composition value and the past second body composition value.

FIG. 3 is a graph illustrating a modification in the modification section of the second body composition measuring device according to the embodiment of the present disclosure. FIG. 3 shows an example in which the body composition value is the body fat percentage (%). The polygonal line 103 is the first body composition value (body fat percentage) acquired by the acquisition unit 26 from the first body composition measuring device 10. The polygonal line 203 is the second body composition value (body fat percentage) estimated by the second body composition measuring device 20. In the example of FIG. 3, the user switches from the first body composition measuring device 10 to the second body composition measuring device 20 from June to July.

As shown in FIG. 3, in the first body composition measuring device 10 and the second body composition measuring device 20, the difference between the first calculation in the estimation unit 13 and the second calculation in the estimation unit 23 (for example, Different body composition values are estimated even for the same user due to the difference in the regression equation) or the difference between the measurement in the measuring unit 12 and the measurement in the measuring unit 22 (for example, the difference in accuracy). In the example of FIG. 3, the user who had a tendency to decrease the body fat percentage until June changed the body composition measuring device in July, and the body fat percentage increased sharply.

Therefore, the correction unit 27 makes a smooth transition from the first body composition value (folded line 103) acquired from the first body composition measuring device 10 to the second body composition value (folded line 203). Correct the body composition value of 1. For this purpose, the estimation unit 23 performs a second calculation on the first measured value (bioelectrical impedance and body weight) acquired from the first body composition measuring device 10, so that the first measured value can be obtained. When obtained, the body composition value estimated by the second calculation is obtained, and this is used as the past second body composition value (line 203'). Alternatively, the estimation unit 23 estimates the second measured value that would have been acquired by the second body composition measuring device 20 from the first measured value acquired from the first body composition measuring device 10. The past second body composition value may be obtained by the second calculation from the estimated second measured value. Then, the correction unit 27 corrects the first body composition value so that the first body composition value (line 103) approaches the past second body composition value (line 203').

FIG. 4 is a graph showing the first body composition value modified by the second body composition measuring device according to the embodiment of the present disclosure. As shown in FIG. 4, the correction unit 27 gradually approaches the past second body composition value from the past toward the switching date (July in the example of FIG. 4). Modify to obtain the modified body composition value (line 103').

Specifically, the correction unit 27 corrects the first body composition value by the following formula (1).

Here, C1'(t) is the modified first body composition value (line 103'), C1 (t) is the first body composition value (line 103), and C2'(t) is. It is the second body composition value in the past (line 203'), t is the measurement date of the body composition value, and D (t) is a weighting function. The weighting function D (t) is a monotonically increasing function. In the example of FIG. 4, the initial weight D to be corrected is set to 0.

In the example of FIG. 4, the first body composition value (line 103) tended to decrease, but the corrected first body composition value (line 103') was sufficiently reduced. It is not expressed and it seems as if there was almost no fluctuation. Therefore, the correction unit 27 can also calculate the corrected first body composition value that more reflects the fluctuation tendency of the first body composition value (line 103).

FIG. 5 is a graph showing another example of the body composition value modified by the second body composition measuring device according to the embodiment of the present disclosure. In the correction method of the example of FIG. 5, the fluctuation tendency of the first body composition value (line 103) in the corrected first body composition value (line 103') is compared with the method of the example of FIG. Remains more.

The correction parameter for determining the correction method in the correction unit 27 is variable, and the correction unit 27 sets the correction parameter according to the instruction by the user. The input unit 21 receives an instruction input for designating a correction parameter from the user. The display unit 25 displays a screen for designating a correction parameter for inputting this instruction.

FIG. 6 is a diagram showing an example of a screen (correction parameter instruction screen) for instructing correction parameters in the second body composition measuring device according to the embodiment of the present disclosure. In the present embodiment, as a correction parameter, the smoothness of changes in the past body composition value is obtained by adjusting the reproducibility of the fluctuation tendency in the corrected body composition value, or a newer body composition value is obtained. A parameter that specifies whether to obtain the smoothness of change (hereinafter, also referred to as "variation tendency reproducibility parameter") and a body composition value closer to or closer to the body composition value of the first body composition measuring device or a second body composition. A parameter (hereinafter, also referred to as “value reproducibility parameter”) that specifies whether or not the body composition value of the measuring device is close to the body composition value is variable and can be set by the user.

As shown in FIG. 6, in the correction parameter instruction screen 61, the two types of correction parameters are represented by two orthogonal axes. The horizontal axis represents the fluctuation tendency reproducibility parameter, and the vertical axis represents the value reproducibility parameter. The user can instruct two types of correction parameters at the same time by instructing one point in the two-dimensional coordinate space (by the designation operation of 1).

FIGS. 7 to 9 are diagrams illustrating an example of the effect of adjusting the fluctuation tendency reproducibility parameter on the corrected first body composition value. The correction unit 27 sets the weight function D (t) as follows according to the designation of the fluctuation tendency reproducibility parameter.

As shown in FIG. 7, when the fluctuation tendency reproducibility parameter α is specified as 0, the correction unit 27 sets the weight function D (t) as a linear function. Specifically, when α = 0, the correction unit 27 sets the weight function D (t) as shown in the following equation (2).

Here, Tend and Tstart are the measurement date of the start point and the measurement date of the end point of the correction period, respectively.

Further, as shown in FIG. 8, when the fluctuation tendency reproducibility parameter is instructed in the negative direction, the correction unit 27 sets the weight function D (t) as a downwardly convex function. As the downwardly convex function, for example, an exponential function can be used, and in the case of an exponential function, the exponential can be increased as it goes in the negative direction. In the present embodiment, when α <0, the correction unit 27 sets the weight function D (t) as shown in the following equation (3).

Further, as shown in FIG. 9, when the fluctuation tendency reproducibility parameter is instructed in the positive direction, the correction unit 27 sets the weight function D (t) as an upwardly convex function. As the upwardly convex function, for example, a logarithmic function or a function that increases in a logarithmic function (that is, an inverse function of the equation (3)) can be used. In the case of a logarithmic function, the base can be made larger toward the plus direction. In the present embodiment, when α> 0, the correction unit 27 sets the weight function D (t) as shown in the following equation (4).

When the fluctuation tendency reproducibility parameter is specified in the negative direction as shown in FIG. 8, the change can be smoothed for the body composition value whose measurement date is relatively old as compared with the case of FIG. 7. On the other hand, when the fluctuation tendency reproducibility parameter is indicated in the positive direction as shown in FIG. 9, the change can be smoothed for the body composition value whose measurement date is relatively new as compared with the case of FIG. 7.

As described above, when the variation tendency reproducibility parameter (α) is negative (α <0), the weight function D (t) is convex downward as the rate of increase of the weight D increases with the passage of time. Since it becomes a function and the corrected first body composition value (line 103') is obtained so as to follow the first body composition value (line 103) longer, in the correction parameter instruction screen 61, in the negative direction of the horizontal axis. Provides a guide "Fluctuating trend reproducibility (data with old measurement date)", and if the fluctuating trend reproducibility parameter (α) is positive (α> 0), the rate of increase of the weight D with the passage of time. Is reduced and becomes a convex function, and the corrected first body composition value (line 103') that approaches the past second body composition value (line 203') earlier can be obtained. In the instruction screen 61, a guide saying "variation tendency reproducibility (data with a new measurement date)" is provided in the positive direction of the horizontal axis. That is, making it possible to set the fluctuation tendency reproducibility parameter variably means weighting by the measurement date.

FIGS. 10 to 12 are diagrams illustrating an example of the effect on the corrected first body composition value when the value reproducibility parameter is adjusted. The correction unit 27 sets the weight function D (t) as follows according to the specification of the value reproducibility parameter.

As shown in FIG. 10, when the value reproducibility parameter β (0 ≦ β ≦ 1) is specified as 0, the correction unit 27 sets the initial value of the weight D to 0.

Further, as shown in FIG. 11, when the value reproducibility parameter β is specified as medium, the correction unit 27 sets the initial value of the weight D to be larger than 0 and corrects it as compared with the case of FIG. In the later first body composition value, the reproducibility of the fluctuation tendency of the past second body composition value is enhanced.

Further, as shown in FIG. 12, when the value reproducibility parameter β is specified to be a value larger than that in the example of FIG. 11, the correction unit 27 increases the initial value of the weight D to be larger than that in the case of FIG. Compared with the case of No. 11, in the modified first body composition value, the reproducibility of the fluctuation tendency of the second body composition value in the past is made higher.

Specifically, the correction unit 27 sets Dαβ (t) in which the value reproducibility parameter β is added to the weights Dα (t) in the equations (2) to (4), and corrects the weights Dαβ (t). Use.

When the value reproducibility parameter β is added to the equations (2) to (4) for obtaining the weight Dα (t), the equations for obtaining the weight Dαβ (t) are the following equations (5) to (7).
First, when α = 0, the weight Dαβ (t) is represented by the equation (5).

However, β> 0.

When α <0, the weight Dαβ (t) is represented by the equation (6).

However, β> 0.

Further, when α> 0, the weight Dαβ (t) is represented by the equation (7).

However, β> 0.

As is clear from the equations (3) and (6), when the horizontal axis parameter is instructed in the positive direction on the correction parameter instruction screen 61 (that is, when the fluctuation tendency reproducibility parameter α is specified as the data whose measurement date is new), The modified first body composition value tends to reflect the "fluctuation tendency" of the second body composition value in the past. Such parameter adjustment is effective when you want to emphasize the accurate tendency of recent changes in body composition values, for example, when the training start time is recent (close to the time of switching to a new body composition measuring device). be. Further, even if there is an error in the first body composition value in the old body composition measuring device, the influence on the corrected first body composition value can be reduced.

As is clear from Eqs. (4) and (7), when the horizontal axis parameter is instructed in the negative direction on the correction parameter instruction screen 61 (that is, when the fluctuation tendency reproducibility parameter α is specified as data whose measurement date is old), The modified first body composition value tends to reflect the "fluctuation tendency" of the first body composition value in the past. Such parameter adjustment is effective when it is desired to emphasize the accurate fluctuation of the previous body composition fluctuation, for example, when the training start time is earlier (far from the switching time to the new body composition measuring device).

Further, when the vertical axis parameter is instructed in the positive direction on the correction parameter instruction screen 61, the corrected first body composition value can easily reflect the "value" of the past second body composition value. Such parameter adjustment is effective when it is desired to emphasize the reflection of the value of the new body composition measuring device. That is, when the value reproducibility parameter β is increased, the past first body composition value (line 103') is the past first body composition value obtained by estimating the first measured value by the second calculation. It will be closer to the body composition value of 2 (line 203'). Further, by setting the value reproducibility parameter β to the maximum positive direction, the first measured value is the body composition value estimated by the second calculation, which is the past second body composition value (line 203). It may overlap with').

Further, when the vertical axis parameter is instructed in the zero direction (no negative value is taken) on the correction parameter instruction screen 61, the corrected first body composition value reflects the "value" of the past first body composition value. It will be easier to make. Such adjustment is effective when you want to emphasize the reflection of the value of the old device. That is, when the value reproducibility parameter β is reduced, the past first body composition value (line 103') approaches the first body composition value (line 103) acquired from the first body composition measuring device 10. become.

FIG. 13 is a flowchart showing an example of a processing flow in the second body composition measuring device according to the embodiment of the present disclosure. First, the acquisition unit 26 acquires the second body composition value and the first measured value from the first body composition measuring device 10 (step S131). The estimation unit 23 estimates the past second body composition value from the first measurement value acquired by the acquisition unit 26 by a second calculation (step S132).

The correction unit 27 sets the weight function Dαβ (t) using the equations (5) to (7) according to the input instruction received by the input unit 21 (step S133), and according to the equation (1), the first (Step S134).

As described above, according to the second body composition measuring device 20 of the present embodiment, the first body composition value obtained by the first body composition measuring device in the past is the current body composition value. The first body composition so that the transition to the second body composition value, that is, the transition of the time series data including the joint from the first body composition value to the second body composition value becomes smooth (looks smooth). Since the value is modified and the modification parameter used for the modification can be specified by the user, the modification can be performed according to the user's intention.

In the above embodiment, the first body composition analyzer side device 10 and the second body composition measuring device 20 have been described as individual devices, but the first device is a combination of a plurality of devices. It may be configured as a body composition measurement system and a second body composition measurement system. Specifically, the measuring unit and the estimating unit may be configured by separate devices. In this case, the device including the estimation unit is a body composition estimation device. Further, when the system is composed of a plurality of devices, some devices (for example, a device including a storage unit) may be provided on the network.

Further, for example, the body composition estimation system may be composed of a first body composition measuring device 10, a second body composition measuring device 20, and a server capable of communicating with these devices via a network. In this case, the server obtains the first body composition value from the first body composition measuring device 10 and obtains the second body composition value from the second body composition measuring device 20. The unit 27 may be provided. Further, the server acquires the first measured value from the first body composition measuring device 10 and acquires the second measured value from the second body composition measuring device 20, and the estimation unit 13. The estimation unit 23 and the correction unit 27 may be provided.

Further, in the above embodiment, there are two types of correction parameters that can be specified by the user, but only one of them may be used. Alternatively, there may be three or more types of correction parameters. Further, the correction parameter may be a parameter other than the above.

In the following, in addition to the above two correction parameters, an example in which the start point and end point of the correction period can be specified as correction parameters will be described as a modification. The configuration of the second body composition measuring device 20 of this modification may be the same as that of the second body composition measuring device 20 of the above-described embodiment shown in FIGS. 1 and 2. In the present embodiment, as in the above embodiment, not only the first body composition value obtained by the first body composition measuring device 10 but also the second body composition measuring device 20 measures. The second body composition value, that is, the second body composition value estimated by the calculation unit 23 from the second measurement value obtained by the measurement unit 22 of the second body composition measurement device 20 by the second calculation is also corrected. do.

The estimation unit 23 of the second body composition measuring device 20 estimates the second body composition value from the measured values obtained by the measuring unit 22 by the second calculation. The correction unit 23 determines the second body composition value based on the latest (last) value of the modified first body composition value and the second body composition value estimated by the estimation unit 23. Fix it. In the second body composition measuring device 20, the user can specify the period for making such a correction as a correction parameter in the input unit 21. Further, in the present modification, it is also possible to specify the point at which the correction of the first body composition value is started, that is, the oldest first body composition value.

Now, the timing to finish the correction of the second body composition value measured by the second body composition measuring device 20 is set to Tend, and the timing to switch from the first body composition measuring device 10 to the second body composition measuring device 20. Is Tchange, the period for modifying the second body composition value estimated by the estimation unit 23 is (Tend-Tchange), and the latest (last) value of the modified first body composition values is C1. '(Tchange), the correction unit 27 corrects the second body composition value C2 (t) estimated by the estimation unit 23 according to the equation (8), and the modified second body composition value C2'( t) is obtained.

However, t is the elapsed time from the starting point Tstart of the correction of the first body composition value.

For the period during which the first body composition value is acquired, the modified first body composition value can be acquired in the same manner as in the above embodiment. At this time, the weight function D (t) is set so as to monotonically increase up to Tend after switching to the second body composition measuring device, so that the second body composition value is still sufficiently reached at the stage of Tchange. Although not approaching, in this modified example, after Tchanging, the second body composition value is corrected by the formula (5), and the degree of the correction is gradually weakened to obtain the second body composition measuring device 20. After a certain period of time has passed since the start of use, the correction of the second body composition value is completed.

FIG. 14 is a graph showing the body composition value corrected by the second body composition measuring device of the modified example of the embodiment of the present disclosure. In the example of FIG. 14, from January to June when the first body composition value is acquired, the first body composition value is corrected by the formula (1) in the same manner as in the above embodiment, and the first body composition value is corrected. From July, when the use of the body composition measuring device 20 of No. 2 was started, the second body composition value obtained by the estimation unit 23 was corrected, and the correction of the second body composition value was completed in October. ..

In this way, by modifying the second body composition value even for a certain period after the start of use of the second body composition measuring device 20, the first body composition value can be changed to the second body composition value. The transition (line 303) can be made smoother, which is particularly effective when the deviation between the first body composition value and the second body composition value is large.

FIG. 15 is a diagram showing an example of a screen (correction parameter instruction screen) for instructing a correction parameter in the second body composition measuring device of the modified example of the embodiment of the present disclosure. In the example of FIG. 15, four correction parameters can be specified by three slide bars and four sliders. That is, in the correction parameter instruction screen 62, the slider 152 is provided on the slide bar 151 for designating the value reproducibility, and the slider 154 is provided on the slide bar 153 for designating the fluctuation tendency reproducibility. A slider 156 for designating the correction start point and a slider 157 for designating the correction end point are provided on the slide bar 155 for designating the correction start point and the correction end point.

As described above, according to the present modification, the first body composition value is modified in the same manner as in the above embodiment, and the second body composition measuring device 20 is used for a certain period of time. Since the second body composition value is also modified, the transition from the first body composition value to the second body composition value can be made smoother. By setting the correction start point as the time when the second body composition measuring device 20 starts to be used, that is, when the first body composition measuring device 10 is switched to the second body composition measuring device 20, the first body composition measuring device 20 is switched. It is also possible to modify only the second body composition value (only for a certain period from the start of use of the second body composition measuring device 20) without modifying the body composition value.

By modifying the second body composition value in this modification, the acquisition unit 26 may acquire only the latest first body composition value. Further, the acquisition unit 26 does not acquire the latest first body composition value from the first body composition measuring device 10, but acquires the first body composition value by the user's input via the input unit 21. You may. When the acquisition unit 26 acquires only the latest first body composition value, C1'(Change) in the formula (5) may be set as the latest first body composition value.

Further, in the above-described embodiment and modification, the user is required to specify a plurality of dimensions to specify the correction parameters corresponding to each dimension, but instead of this, the user is required to specify one dimension. Then, a plurality of correction parameters may be specified at the same time. For example, on the correction parameter instruction screen 62, a one-dimensional designation of "reproducibility of past data" is made, and the above-mentioned fluctuation tendency reproducibility parameter α and value reproducibility parameter β are set based on this designation. You may. “Reproducibility of past data” can be considered as one-dimensional designation on a line extending from the upper left to the lower right on the correction parameter designation screen 61 shown in FIG.

Further, in the above-described embodiment and modification, the correction parameters are continuously changed according to the input specified by the user, but the correction parameters may be set discretely. In that case, the correction parameter specification screen 62 The user's designated input in is may be continuous or discrete. Alternatively, the user's designated input may be button switching. For example, the fluctuation tendency reproducibility parameter α is selectively specified from "slow" (weight function is convex downward), "medium" (weight function is linear), and "fast" (weight function is convex upward). You can do it.

Further, as described above, the body composition measuring device can measure a plurality of types of body composition values. The second body composition measuring device 20 may be able to collectively set the correction parameters for each of the different types of body composition values, or may be able to set different correction parameters for each type of body composition value. May be good.

Further, the first and second body composition measuring devices of the present disclosure may be for home use or for business use installed in a sports gym or the like, respectively. For example, when the first and second body composition measuring devices are used in a sports gym, the user who specifies the correction parameter may be the staff of the sports gym, and the user who measures the body composition uses the sports gym. Can be a person. That is, the user who specifies the correction parameter via the input unit 21 and the user who measures the body composition using the body composition measuring device may be different.

Further, in the above embodiment, an example of improving the continuity of the body composition value has been described on the assumption that the old body composition measuring device can be switched to the new body composition measuring device, but the application of the present disclosure is applicable. Not limited to this. For example, the present disclosure can also be applied when two body composition measuring devices are used in parallel. In this case, either one or both of the first body composition measuring device and the second body composition measuring device has the function of the above-mentioned correction unit 27, and the body composition measuring device having the correction function is the other. The body composition value or the measured value is acquired from the body composition measuring device, and in the body composition measuring device having the correction function, the body composition value acquired from another body composition measuring device and / or the body composition value calculated by itself is obtained. It can be modified in the same manner as in the above embodiment.

10 First body composition measuring device 11 Input unit 12 Measuring unit 13 Estimating unit 14 Display unit 15 Storage unit 16 Output unit 20 Second body composition measuring device 21 Input unit 22 Measuring unit 23 Estimating unit 24 Display unit 25 Storage unit 26 Acquisition department 27 Correction department

Claims (13)

1. A measuring unit that measures the user's body and obtains a second measured value,
   An estimation unit that estimates a second body composition value from the second measured value using a predetermined estimation method, and an estimation unit.
   An acquisition unit that acquires the first body composition value of the user obtained by another device in the past, and
   In order to smooth the transition from the first body composition value to the second body composition value, at least one of the first body composition value and the second body composition value is subject to one or more parameters. The correction part to be corrected by the correction method,
   A body composition analyzer equipped with.
2. The body composition measuring device according to claim 1, further comprising an input unit for receiving an input for designating the one or more parameters.
3. The acquisition unit further acquires the first measured value used by the other device to estimate the first body composition value.
   The estimation unit estimates the past second body composition value from the first measured value by using the same estimation method as the predetermined estimation method.
   The body composition measuring device according to claim 1 or 2, wherein the correction unit corrects the first body composition value by using the past second body composition value.
4. The acquisition unit acquires a plurality of the first body composition values having different estimation times, and obtains the first body composition values.
   The body composition measuring device according to claim 3, wherein the correction unit corrects the first body composition value by weighting the older first body composition value so that the degree of correction becomes smaller. ..
5. The body composition measurement according to any one of claims 1 to 4, wherein the correction unit corrects the second body composition value based on the first body composition value and the second body composition value. Device.
6. The correction unit is weighted so that the longer the elapsed time from the estimation of the first body composition value is, the less the degree of correction of the second body composition value is, and the second body composition value is corrected. The body composition measuring apparatus according to claim 5.
7. The body composition measuring device according to claim 4 or 6, wherein the parameter includes a parameter for designating whether the first body composition value is emphasized or the second body composition value is emphasized.
8. The parameter according to claim 4 or 6, wherein the parameter includes a parameter for designating a high or low reproducibility of the fluctuation tendency of the first body composition value and / or the second body composition value before and after the modification. Body composition measuring device.
9. The body composition measuring device according to any one of claims 4 to 6, wherein the parameter includes a parameter for designating at least one of a start point and an end point of the modification period.
10. An estimation unit that estimates the second body composition value from the second measurement value obtained by measuring the user's body using a predetermined estimation method.
    An acquisition unit that acquires the first body composition value of the user obtained by another device in the past, and
    In order to smooth the transition from the first body composition value to the second body composition value, at least one of the first body composition value and the second body composition value is subject to one or more parameters. The correction part to be corrected by the correction method,
    A body composition analyzer equipped with.
11. Acquiring unit that acquires the first body composition value of the user obtained by the first body composition estimator in the past and acquires the second body composition value of the user obtained by the second body composition apparatus. When,
    In order to smooth the transition from the first body composition value to the second body composition value, at least one of the first body composition value and the second body composition value is subject to one or more parameters. The correction part to be corrected by the correction method,
    A system equipped with.
12. By executing the body composition measuring device on the computer, the body composition measuring device can be operated.
    An estimation unit that estimates a second body composition value from a second measurement value obtained by measuring the user's body with the measurement unit of the body composition measuring device using a predetermined estimation method.
    An acquisition unit that acquires the first body composition value of the user obtained by another device in the past, and in order to smooth the transition from the first body composition value to the second body composition value. A correction unit that corrects at least one of the first body composition value and the second body composition value by a correction method according to one or a plurality of parameters.
    A computer program that acts as.
13. A computer-readable non-temporary storage medium that stores the computer program according to claim 12.
    
    
    
    
    

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