JP2015167575A - Device, method and program for determining body fat burning state - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device, a method and a program for determining a body fat burning state, which enables calculation of a burning ratio between visceral fat and subcutaneous fat.SOLUTION: A device 10 for determining a body fat burning state acquires a measured ketone body concentration obtained by measuring a ketone body discharged from a user, and calculates a burning ratio between the user's visceral fat and subcutaneous fat, on the basis of the acquired present measured ketone body concentration, the measured ketone body concentration measured in the past and the amount of the user's present visceral fat.

Description

  The present invention relates to a body fat burning state determination device, method, and program.

  In order to diet healthily, it is necessary to appropriately reduce body fat. To that end, it is necessary to grasp the state of burning of body fat and exercise and eat appropriately.

  Conventionally, it is known that the state of combustion of body fat can be grasped by measuring the concentration of acetone in exhaled breath. For example, Patent Document 1 discloses body fat calculated based on the acetone concentration detected by an acetone detection sensor. A technique for notifying the amount of combustion is disclosed.

JP 2001-349888 A

  However, body fat includes visceral fat and subcutaneous fat, and the technique described in Patent Document 1 cannot calculate the combustion ratio between visceral fat and subcutaneous fat.

  An object of the present invention is to provide a body fat combustion state determination device, method, and program capable of calculating the combustion ratio between visceral fat and subcutaneous fat.

  In order to solve the above-mentioned problem, the body fat burning state determination device according to the first aspect of the present invention includes a ketone body concentration acquisition means for acquiring a measured ketone body concentration obtained by measuring a ketone body discharged from a user, and the ketone body concentration. Based on the current measured ketone body concentration acquired by the acquisition means, the measured ketone body concentration measured in the past, and the current visceral fat amount of the user, the burning ratio of the user's visceral fat and subcutaneous fat Calculating means for calculating.

  In addition, as described in claim 2, it may be configured to include an output unit that outputs information indicating which of the user's visceral fat or subcutaneous fat is prevailingly burned based on the combustion ratio. .

  Further, as described in claim 3, the calculating means calculates the visceral fat reduction rate of the user based on the current measured ketone body concentration and the measured ketone body concentration measured in the past, and the output The means may output the visceral fat reduction rate of the user.

  Further, as described in claim 4, the calculation means calculates the visceral fat reduction amount of the user based on the current measured ketone body concentration and the measured ketone body concentration measured in the past, and the output The means may output the visceral fat reduction amount of the user.

  In addition, as described in claim 5, the calculating means calculates a current visceral fat amount based on the past visceral fat amount of the user and the reduced visceral fat amount of the user, and calculates the calculated current visceral fat. The burning ratio between the user's visceral fat and subcutaneous fat may be calculated based on the fat amount.

  In addition, as described in claim 6, the calculation means calculates the subcutaneous fat reduction amount of the user based on the visceral fat reduction amount and the combustion ratio, and the output means calculates the subcutaneous fat of the user. The amount of decrease may be output.

  Further, as described in claim 7, it may be configured to include a measuring means for measuring the ketone body discharged from the user.

  In addition, as described in claim 8, the ketone body discharged from the user is preferably acetone contained in exhaled breath discharged from the user.

  The body fat burning state determination method according to claim 9, wherein a measured ketone body concentration obtained by measuring a ketone body discharged from a user is acquired, the acquired current measured ketone body concentration, and the measured ketone body measured in the past. Based on the body concentration and the current amount of visceral fat of the user, the combustion ratio of the user's visceral fat and subcutaneous fat is calculated.

  The body fat burning state determination program according to claim 10, wherein a measured ketone body concentration obtained by measuring a ketone body discharged from a user is acquired by a computer, and the obtained current measured ketone body concentration is measured in the past. A body fat combustion state determination program for executing a process including calculating a combustion ratio of visceral fat and subcutaneous fat of the user based on the measured ketone body concentration and the current visceral fat amount of the user is there.

  According to the present invention, the combustion ratio between visceral fat and subcutaneous fat can be calculated.

It is an external view of a body fat combustion state determination apparatus. It is a block diagram of a body fat combustion state determination apparatus. It is a flowchart of the process by the body fat combustion state determination program. It is a graph showing the relationship between accumulation breath acetone concentration and the decreasing rate of a visceral fat area. It is a figure which shows an example of a display of a measurement result. It is a graph showing the relationship between abdominal circumference and a visceral fat area. It is a graph showing the relationship between the visceral fat area measured by BIA method and the visceral fat area measured by CT. It is a graph showing the relationship between a cumulative breath acetone concentration and the amount of decrease in visceral fat area. It is a graph showing the relationship between the burning ratio of visceral fat and subcutaneous fat and the visceral fat area. It is a block diagram of the form which connects a measuring instrument and a personal computer.

  Hereinafter, embodiments of the present invention will be described.

  FIG. 1 is an external view of a body fat combustion state determination device 10 according to the present embodiment. As shown in FIG. 1, the body fat combustion state determination device 10 includes a measurement unit 12, a display unit 14, and an operation unit 16. The body fat combustion state determination device 10 according to the present embodiment is a portable device that is convenient to carry as an example.

  The measurement part 12 measures the density | concentration (henceforth a ketone body density | concentration) discharged | emitted from the user. Here, the ketone body is a general term for acetoacetic acid, 3-hydroxybutyric acid (β-hydroxybutyric acid, acetone), and represents at least one of these.

  This embodiment demonstrates the case where the measurement part 12 is equipped with the acetone detection sensor which detects the acetone in a user's exhalation as an example. The user can measure the concentration of acetone in the exhaled breath by blowing the exhaled breath into the blowing port 18. In addition, in order to make it easy to collect exhalation, the insufflation port 18 may have a mouthpiece type shape that can be held by the mouth or a mask type shape.

  The display unit 14 is composed of, for example, a liquid crystal panel. The display unit 14 displays various screens such as various setting screens, measurement results of the acetone concentration measured by the measurement unit 12, and advice information based on the measured acetone concentration. Further, the display unit 14 may be configured to have a touch panel function, and may be configured to be operated by directly touching the screen.

  The operation unit 16 includes a plurality of operation buttons, and FIG. 1 shows a case where three operation buttons 16A to 16C are provided as an example.

  As an example, the operation button 16A functions as a button for turning on / off the body fat burning state determination apparatus 10 and performing a determination operation on various screens.

  The operation button 16B functions as a button for inputting information on various screens as an example.

  For example, the operation button 16C functions as a button for instructing to read past measurement results and the like.

  The operation button 16B also functions as a button for moving the cursor on the screen downward, and the operation button 16C also functions as a button for moving the cursor on the screen upward.

  In FIG. 2, the block diagram of the body fat combustion state determination apparatus 10 was shown. As shown in FIG. 2, the body fat combustion state determination device 10 includes a controller 20. The controller 20 includes a CPU (Central Processing Unit) 20A, a ROM (Read Only Memory) 20B, a RAM (Random Access Memory) 20C, a nonvolatile memory 20D, and an input / output interface (I / O) 20E via a bus 20F. It is a connected configuration. In this case, a body fat combustion state determination program that causes the CPU 20A of the controller 20 to execute a body fat combustion state determination process, which will be described later, is written in, for example, the nonvolatile memory 20D, and is read and executed by the CPU 20A. The body fat burning state determination program may be provided by a recording medium such as a CD-ROM or a memory card, or may be downloaded from a server (not shown).

  A measurement unit 12, a display unit 14, an operation unit 16, a timer 22, and a communication unit 24 are connected to the I / O 20E.

  The timer 22 has a function for acquiring the current time and a time measuring function for measuring a set time.

  The communication unit 24 transmits / receives information to / from an external device such as a body composition meter by wireless communication or wired communication. For this reason, the body fat combustion state determination device 10 can acquire the user's body composition information, for example, visceral fat mass from an external device such as a body composition meter via the communication unit 24.

  Next, as an operation of the present embodiment, processing by the body fat combustion state determination program executed by the CPU 20A of the controller 20 will be described with reference to a flowchart shown in FIG. The process shown in FIG. 3 is executed when the user operates the operation unit 16 of the body fat combustion state determination device 10 to instruct the execution of the body fat combustion state determination program.

  In step S100, the acetone concentration is measured. Specifically, first, a message indicating that the measurement of the acetone concentration is started is displayed on the display unit 14 after a predetermined time (for example, 10 seconds) has elapsed, and the predetermined time is counted with respect to the timer 22. Instruct.

  When the timer 22 notifies that a predetermined time has elapsed, the inhalation start message instructing to inhale exhalation from the insufflation port 18 is displayed on the display unit 14, and the measurement unit 12 is acetone. Instructs to start concentration measurement. When the insufflation start message is displayed on the display unit 14, the user inhales exhalation into the insufflation port 18.

  The measurement unit 12 measures the acetone concentration of exhaled breath that has been blown into the blowing port 18 and outputs the measured acetone concentration to the controller 20. The measured acetone concentration is stored in the nonvolatile memory 20 </ b> D together with the current date and time acquired from the timer 22.

  In step S102, the visceral fat reduction rate is obtained based on the acetone concentration measured in step S100 and displayed on the display unit 14.

  The acetone concentration of acetone, which is a byproduct of lipid metabolism, is thought to be equivalent to the amount of fat burned. When it runs short, the fat is burned and the acetone concentration becomes high. For this reason, normally, when there is a surplus of carbohydrate energy in the body after eating, the acetone concentration starts to decrease, and then the acetone concentration increases when there is insufficient carbohydrate energy in the body. That is, it can be said that the higher the acetone concentration, the higher the lipid metabolism.

  Human body fat includes visceral fat and subcutaneous fat, and visceral fat is known to decrease in a relatively short period of time. In FIG. 4, a large number of subjects who work to prevent and eliminate obesity are asked to measure the acetone concentration every day at a predetermined time with an acetone concentration measurement period of one week, and the start of the acetone concentration measurement period. Before and after the measurement, the visceral fat area was measured, and based on these measurement results, the results of calculating the relationship between the measured acetone concentration cumulative value (cumulative breath acetone concentration) and the visceral fat area reduction rate Indicated.

  The visceral fat area is, for example, the area of the visceral fat in the cross section of the abdomen of the human body, and the rate of decrease in the visceral fat area is the acetone concentration measurement period relative to the visceral fat area measured before the start of the acetone concentration measurement period. It is the reduction rate of the visceral fat area measured after completion.

  A large number of rhombus marks shown in FIG. 4 represent the measured values of a large number of subjects, and the results of regression analysis of these measured values are represented by the relational expression f1. In the example of FIG. 4, the relational expression is expressed as a linear expression, but may be expressed as a polynomial having a quadratic expression or higher. The relational expressions in FIGS. 6 to 9 are the same.

  Thus, there is a correlation between the cumulative breath acetone concentration and the rate of decrease in visceral fat area. Therefore, the reduction rate of the visceral fat area can be obtained from the accumulated breath acetone concentration using the relational expression f1 shown in FIG.

  For this reason, in step S102, the acetone concentration measured in step S100 is added to the accumulated acetone concentration of the past predetermined period stored in the nonvolatile memory 20D to calculate the accumulated breath acetone concentration, and the calculated accumulated expired air The reduction rate of the visceral fat area corresponding to the acetone concentration is obtained using the relational expression f1 shown in FIG. Then, as shown in FIG. 5, the current acetone concentration, the accumulated breath acetone concentration, the acetone concentration change amount (difference between the past acetone concentration and the current acetone concentration) obtained in step S100, the acetone concentration change rate (the past The ratio between the acetone concentration and the current acetone concentration) and the reduction rate of the internal fat area (visceral fat reduction rate) are displayed on the display unit 14. In the above, the period for calculating the cumulative breath acetone concentration is a predetermined period in the past. However, the period is not limited to this, and an arbitrary period may be set by the user operating the operation unit 16. .

  In step S104, an input screen for visceral fat mass measured in the past is displayed on the display unit. The user can input the visceral fat amount measured in the past on this input screen, for example, the visceral fat amount measured at the start of the period for calculating the cumulative breath acetone concentration. When the visceral fat amount measured in the past is input by the user, the process proceeds to step S106, and when the visceral fat amount measured in the past is not input, this routine is ended.

  In the present embodiment, the case where the visceral fat amount is a visceral fat area will be described. Moreover, the visceral fat amount to be input may be, for example, the visceral fat amount actually measured by CT or MRI, or the visceral fat amount estimated by a body composition analyzer by a BIA (Bioelectrical Impedance Analysis) method.

  Further, as shown in FIG. 6, the visceral fat area, that is, the visceral fat amount and the abdominal circumference has a correlation as shown in the relational expression f2. Therefore, the abdominal circumference may be input instead of the visceral fat amount. In this case, the visceral fat area corresponding to the inputted abdominal circumference may be calculated using the relational expression f2 shown in FIG. 6, and the calculated visceral fat area may be used as the visceral fat mass.

  As shown in FIG. 7, the visceral fat area estimated by the BIA method and the visceral fat area measured by CT have a correlation as shown in the relational expression f3. Therefore, when the visceral fat area estimated by the BIA method is input as the visceral fat amount, the visceral fat area measured by CT corresponding to the input visceral fat area estimated by the BIA method is shown in FIG. The calculated visceral fat area may be used as the visceral fat amount.

  In step S106, a visceral fat reduction amount (a reduction amount of the visceral fat area) is obtained. Then, as shown in FIG. 5, the obtained visceral fat reduction amount is displayed on the display unit 14.

  As shown in FIG. 8, there is a correlation between the cumulative breath acetone concentration and the amount of decrease in visceral fat area. Therefore, the amount of decrease in the visceral fat area can be obtained from the accumulated breath acetone concentration using the relational expression f4 shown in FIG.

  Further, the visceral fat reduction amount may be calculated based on the visceral fat area reduction rate obtained in step S102 and the visceral fat amount input in step S104.

  For example, if the visceral fat area reduction rate is X% and the visceral fat amount measured in the past is A, the visceral fat reduction amount B can be calculated by the following equation.

B = A × (X / 100) (1)

  In step S108, the current visceral fat mass is calculated. The current visceral fat amount C can be calculated by the following equation.

C = A + B (2)

  In step S110, a combustion ratio between visceral fat and subcutaneous fat is obtained. Then, as shown in FIG. 5, the calculated combustion ratio of visceral fat and subcutaneous fat is displayed on the display unit 14. When the visceral fat is a and the subcutaneous fat is b, the combustion ratio may be displayed as a / b as shown in FIG. 5 or may be displayed as a: b. Then, (a / b) × 100 may be calculated and displayed as a percentage (%).

  As shown in FIG. 9, there is a correlation between the visceral fat area measured by CT, that is, the visceral fat amount, and the combustion ratio between the visceral fat and the subcutaneous fat. Therefore, the combustion ratio between the visceral fat and the subcutaneous fat can be obtained from the visceral fat amount calculated in step S108 using the relational expression f5 shown in FIG.

  The amount of subcutaneous fat reduction (subcutaneous fat burning amount) is calculated based on the amount of visceral fat reduction obtained in step S106 and the combustion ratio of the visceral fat and subcutaneous fat obtained in step S110. As shown, the calculated subcutaneous fat reduction amount may be displayed on the display unit 14.

  In step S112, it is determined whether or not the current visceral fat amount calculated in step S108 is equal to or less than a threshold value TH. If the current visceral fat amount is equal to or less than the threshold value TH, the process proceeds to step S114, and the current visceral fat amount is determined. If the amount exceeds the threshold TH, the process proceeds to step S116.

  As shown in FIG. 9, the threshold value TH is a visceral fat amount (visceral fat area) when the combustion ratio of visceral fat to subcutaneous fat is 1: 1. Therefore, when the current visceral fat amount is equal to or less than the threshold value TH, it is determined that the subcutaneous fat is burned predominantly, and when the current visceral fat amount exceeds the threshold value TH, it is determined that the visceral fat is burned predominantly. it can.

  Therefore, in step S114, a message that the subcutaneous fat is burned predominantly is displayed on the display unit 14, and in step S116, a message that the visceral fat is burned predominantly is displayed on the display unit 14.

  Visceral fat is said to have a deep relationship as a risk factor for lifestyle-related diseases. Conventionally, in order to measure visceral fat mass, a large-scale device using radiation such as CT must be used. did not become.

  On the other hand, in the present embodiment, it is possible to easily grasp the visceral fat amount by measuring the acetone concentration in the breath, and to grasp which of the visceral fat or the subcutaneous fat is prevailingly burned. Therefore, motivation for diet and exercise can be improved.

  In this embodiment, the visceral fat reduction rate and the visceral fat reduction amount are obtained based on the accumulated breath acetone concentration. However, instead of the cumulative breath acetone concentration, the acetone concentration change amount (the past acetone concentration and the current acetone concentration). The visceral fat reduction rate and the visceral fat reduction amount may be obtained based on the acetone concentration change rate (ratio between the previous acetone concentration and the current acetone concentration).

  In the present embodiment, the case where the body fat burning state determination device 10 is a portable dedicated device has been described. For example, as illustrated in FIG. 10, a measurement device 82 including the measurement unit 12 is wired to a personal computer 80. Or it is good also as a structure connected by radio | wireless. In this case, the personal computer 80 functions as a body fat combustion state determination device by acquiring the acetone concentration measured by the measuring device 82 and executing the processing shown in FIG.

  In addition, the device to which the measuring device 82 is connected is not limited to a personal computer, and may be a mobile terminal such as a mobile phone, a smartphone, and a tablet terminal. Moreover, it is good also as a structure which incorporated the measurement part 12 in these portable terminals. Moreover, it is good also as a structure which network-connects these portable terminals or the measuring equipment 82 to a server. In this case, the server functions as a body fat combustion state determination device. That is, the portable terminal or the measuring device 82 transmits the measured acetone concentration to the server. And a server performs the process shown in FIG. 3 based on the acetone density | concentration received from the portable terminal or the measuring device 82, and transmits a result to the portable terminal or the measuring device 82. FIG. As a result, the measuring device 82 only needs to have at least a function of measuring the acetone concentration and transmitting it to the server and a function of receiving and displaying the result from the server, and can be configured at a low cost.

  In the present embodiment, the measurement unit 12 is described as having a configuration including an acetone detection sensor for detecting acetone in breath. However, the present invention is not limited to this, and from the user's skin, urine, saliva, sweat, and the like. It is good also as a structure provided with the ketone body detection sensor which detects the discharged | emitted ketone body.

DESCRIPTION OF SYMBOLS 10 Body fat combustion state determination apparatus 12 Measurement part 14 Display part 16 Operation part 18 Inlet 20 Controller 80 Personal computer 82 Measuring apparatus

Claims (10)

A ketone body concentration acquisition means for acquiring a measured ketone body concentration obtained by measuring a ketone body discharged from a user;
Based on the current measured ketone body concentration acquired by the ketone body concentration acquisition means, the measured ketone body concentration measured in the past, and the current amount of visceral fat of the user, the user's visceral fat and subcutaneous fat Calculating means for calculating a combustion ratio with
A body fat burning state determination device comprising: The body fat combustion state determination device according to claim 1, further comprising: an output unit that outputs information indicating which of the user's visceral fat or subcutaneous fat is prevailingly burned based on the combustion ratio. The calculation means calculates the visceral fat reduction rate of the user based on the current measured ketone body concentration and the measured ketone body concentration measured in the past,
The body fat burning state determination device according to claim 2, wherein the output means outputs a visceral fat reduction rate of the user. The calculation means calculates the amount of visceral fat loss of the user based on the current measured ketone body concentration and the measured ketone body concentration measured in the past,
The body fat combustion state determination device according to claim 2, wherein the output unit outputs a visceral fat reduction amount of the user. The calculation means calculates a current visceral fat amount based on the user's past visceral fat amount and the user's visceral fat decrease amount, and calculates the user's visceral fat amount based on the calculated current visceral fat amount. The body fat combustion state determination device according to any one of claims 2 to 4, wherein a combustion ratio with subcutaneous fat is calculated. The calculation means calculates the subcutaneous fat reduction amount of the user based on the visceral fat reduction amount and the combustion ratio,
The body fat combustion state determination device according to claim 5, wherein the output means outputs a subcutaneous fat reduction amount of the user. The body fat burning state determination device according to any one of claims 1 to 6, further comprising a measuring unit that measures a ketone body discharged from the user. The body fat combustion state determination device according to any one of claims 1 to 7, wherein the ketone body discharged from the user is acetone contained in exhaled air discharged from the user. Obtain the measured ketone body concentration that measured the ketone body discharged from the user,
Based on the acquired current measured ketone body concentration, the measured ketone body concentration measured in the past, and the current visceral fat amount of the user, a combustion ratio of the user's visceral fat and subcutaneous fat is calculated. Body fat burning state determination method. On the computer,
Obtain the measured ketone body concentration that measured the ketone body discharged from the user,
Based on the acquired current measured ketone body concentration, the measured ketone body concentration measured in the past, and the current visceral fat amount of the user, a combustion ratio of the user's visceral fat and subcutaneous fat is calculated. The body fat combustion state determination program for performing the process including this.

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