Analytical equipment, analytical method, and analytical program

Abstract

To provide an analysis device, an analysis method and an analysis program, capable of identifying more accurately an ingredient ingested by a person to be measured.SOLUTION: An analysis device 10 is wearable on a body of a person to be measured, for example, like a wrist band. The analysis device 10 calculates a BI of the person to be measured based on measurement results obtained by using multiple electrodes 20 brought into contact with the person to be measured, and an ingested ingredient by the person to be measured; and determines a component ingested by the person to be measured based on a temporal change in the calculated BI and reference information indicating a temporal change in the BI corresponding to a component ingested by a person.SELECTED DRAWING: Figure 1

Description

【Technical Field】 【0001】 The present invention relates to an analyzer, an analysis method, and an analysis program. 【Background Art】 【0002】 When trying to grasp the nutrients, minerals, or moisture ingested by a person through diet and hydration, etc., there is a method of determining the components contained in the ingested substances from diet records or image records of meals and performing nutritional calculations. 【0003】 In the above conventional method, it takes time to create diet records or image records, and since the ingested substances are not actually measured, there may be cases where they do not match the actual situation. Even if the diet content is accurately recorded in detail, the recorded content may not be the nutrients actually contained in the meal. Also, it is not known whether the nutrients contained in the meal have actually been absorbed by the human body. 【0004】 Here, for example, Patent Document 1 describes a health management guideline advice device that converts the impedance measurement value of the body of a subject into a blood circulation state index indicating the blood circulation state of the subject. The device described in Patent Document 1 converts the impedance value into a blood circulation state index based on the daily change pattern of impedance. 【Prior Art Documents】 【Patent Documents】 【0005】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2000-23936 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0006】 As in Patent Document 1, by using the impedance of the subject, the physical state of the subject can be specified more directly. However, in Patent Document 1, there is something that determines the blood circulation state of the subject, and it does not determine the components ingested by the subject. 【0007】 Therefore, the present invention aims to provide an analytical device, an analytical method, and an analytical program that can more accurately identify the components ingested by a person being measured. [Means for solving the problem] 【0008】 An analytical apparatus according to one aspect of the present invention comprises a calculation means for calculating the electrical resistance of a subject based on measurement results using a plurality of electrode parts that come into contact with the subject, and a determination means for determining the components ingested by the subject based on reference information showing the time change of the electrical resistance corresponding to the components ingested by the person and the time change of the electrical resistance calculated by the calculation means. 【0009】 This configuration utilizes the phenomenon where the electrical resistance of a person being measured changes depending on the components they have ingested, thereby determining the components they have consumed. As a result, this configuration allows for more accurate identification of ingested components without requiring the person to keep a record of their diet. 【0010】 An analytical apparatus according to one aspect of the present invention comprises a calculation means for calculating the electrical resistance of a subject based on measurement results using a plurality of electrode parts that come into contact with the subject, and a determination means for determining whether or not the subject has ingested a specific component based on reference information showing the time change of the electrical resistance corresponding to the component ingested by the person and the time change of the electrical resistance calculated by the calculation means. With this configuration, the subject can recognize whether or not they have ingested any component. 【0011】 In the analytical apparatus described above, the reference information is first reference information showing the change in electrical resistance over time for each component when a person ingests the components, namely protein, lipid, and carbohydrate. The determination means may determine which component the person being measured has ingested based on the change in electrical resistance over time calculated by the calculation means and the change in electrical resistance over time for each component shown in the first reference information. This configuration makes it possible to identify whether the person being measured has ingested protein, lipid, or carbohydrate as a nutrient. 【0012】 In the analytical apparatus described above, the first reference information includes the relationship between the intake of the components, namely protein, lipid, and carbohydrate, and the time it takes for the electrical resistance to return to its pre-ingestion state. The determination means may determine the amount of the component ingested by the subject based on the time it takes for the electrical resistance to return to its pre-ingestion state, calculated by the calculation means, and the first reference information. This configuration allows for the qualitative identification of the amount of nutrients ingested by the subject. 【0013】 The above-described analytical apparatus may include a correction means for correcting the amount of the component determined by the determination means based on changes in the body composition of the subject over a period of one day or more. This configuration allows for more accurate identification of the components ingested by the subject. 【0014】 In the analytical apparatus described above, the first reference information may be information generated by acquiring the time change of the electrical resistance within a predetermined time after the subject ingests protein, lipid, or carbohydrate. With this configuration, by generating first reference information tailored to the subject, the components ingested by the subject can be identified more accurately. 【0015】 The analytical apparatus described above may include a body temperature acquisition means for acquiring the body temperature of the person being measured, the first reference information including the time change of body temperature for each component when a person ingests protein, lipid, and carbohydrate, and the determination means may determine the component ingested by the person being measured based on the combination of the body temperature acquired by the body temperature acquisition means and the electrical resistance calculated by the calculation means and the first reference information. With this configuration, the component ingested by the person being measured can be identified more accurately. 【0016】 In the above-described analysis apparatus, a body temperature acquisition means is provided to acquire the body temperature of the person being measured. The determination means may determine the physical condition of the person being measured based on the relationship between the time change of the body temperature acquired by the body temperature acquisition means and the time change of the electrical resistance calculated by the calculation means, as well as the reference information. With this configuration, changes in the physical condition of the person being measured can be easily identified. 【0017】 In the analytical apparatus described above, the reference information may also be second reference information indicating that the body temperature rises before the increase in electrical resistance, and that the body temperature decreases along with the electrical resistance upon fluid intake. This configuration makes it possible to identify that the person being measured is dehydrated. 【0018】 In the above-described analytical apparatus, the reference information may also be a third reference information indicating that the time change of body temperature is constant, while the electrical resistance increases and then decreases. With this configuration, it is possible to identify that the person being measured is experiencing edema due to excessive salt intake. 【0019】 The above-described analytical apparatus may also include an advice-deriving means that derives advice for maintaining health to the person being measured, based on the determination result from the determination means. With this configuration, appropriate advice can be provided according to the components ingested by the person being measured. 【0020】 In the analytical apparatus described above, the plurality of electrode units may be attachable to the body of the person being measured. With this configuration, the components ingested by the person being measured can be identified regardless of where the person ate. 【0021】 An analysis method according to one aspect of the present invention comprises: a first step of calculating the electrical resistance of a person to be measured based on measurement results using a plurality of electrode parts that come into contact with the person to be measured; and a second step of determining the components ingested by the person to be measured based on reference information showing the change in electrical resistance over time according to the components ingested by the person and the change in electrical resistance over time calculated in the first step. 【0022】 An analysis program in one aspect of the present invention causes a computer to function as a calculation means for calculating the electrical resistance of a subject based on measurement results using a plurality of electrode parts that come into contact with the subject, and a determination means for determining the components ingested by the subject based on reference information showing the time change of the electrical resistance corresponding to the components ingested by the person and the time change of the electrical resistance calculated by the calculation means. 【0023】 An analysis method according to an aspect of the present invention includes a first step of calculating the electrical resistance of the subject based on measurement results using a plurality of electrode portions that contact the subject, and a time change of the electrical resistance corresponding to a component ingested by a person. A second step of determining whether or not the subject has ingested a specific component based on the reference information indicating the change and the time change of the electrical resistance calculated in the first step. 【0024】 An analysis program according to an aspect of the present invention causes a computer to function as a calculation means for calculating the electrical resistance of the subject based on measurement results using a plurality of electrode portions that contact the subject, and a time change of the electrical resistance corresponding to a component ingested by a person. A determination unit that determines whether or not the subject has ingested a specific component based on the reference information indicating the change and the time change of the electrical resistance calculated by the calculation unit. 【Effect of the Invention】 【0025】 According to the present invention, the components ingested by the subject can be specified more accurately. 【Brief Description of the Drawings】 【0026】 [Figure 1] FIG. 1 is a schematic configuration diagram of an analysis apparatus according to the first embodiment. [Figure 2] FIG. 2 is a functional block diagram of the analysis apparatus according to the first embodiment. [Figure 3] FIG. 3 is a diagram showing the relationship between BI and body temperature. [Figure 4] FIG. 4 is a diagram showing the time change of BI with respect to nutrients ingested by a person, where (A) is lipid, (B) is carbohydrate, and (C) is protein. [Figure 5] FIG. 5 is a diagram showing the time change of BI and body temperature according to the physical state of a person, where (A) is the case where the person is in a dehydrated state and (B) is the case where the person has an excessive amount of salt. [Figure 6] FIG. 6 is a flowchart showing the flow of the analysis process according to the first embodiment. [Figure 7]Figure 7 is a schematic diagram of the analysis system according to the second embodiment. [Figure 8] Figure 8 is a functional block diagram relating to the analysis function of the second embodiment. [Figure 9] Figure 9 is a schematic diagram relating to the intake component correction function of the second embodiment. [Figure 10] Figure 10 is a functional block diagram relating to the analysis function of the third embodiment. [Figure 11] Figure 11 is a schematic diagram of the analytical apparatus in another embodiment. [Modes for carrying out the invention] 【0027】 Embodiments of the present invention will be described below with reference to the drawings. The embodiments described below are merely examples of how the present invention can be implemented, and the present invention is not limited to the specific configurations described below. In implementing the present invention, specific configurations may be adopted as appropriate depending on the embodiment. 【0028】 (First Embodiment) Figure 1 is a schematic diagram of the analytical apparatus 10 of this embodiment. 【0029】 The analyzer 10 of this embodiment is wearable on the body of the person being measured, and is, for example, in the form of a band. The analyzer 10 is, for example, a wristband worn on the wrist, but is not limited to this, and may be worn on the ankle, for example. Alternatively, the analyzer 10 may not be in the form of a band, but for example, be flat and be attached to the chest, abdomen, etc. with an adhesive substance. 【0030】 The analyzer 10 has two or more electrode sections 20 and a body temperature measurement section 22 positioned on the inside so as to contact the arm of the person being measured, and a monitor 24 and a power switch 26 positioned on the outside. The analyzer 10 does not necessarily have to include the body temperature measurement section 22. In this configuration, a body temperature acquisition section 32, described later, acquires the body temperature of the person being measured from another device. 【0031】 The electrode unit 20 is composed of a current electrode 20A and a voltage electrode 20B. The analyzer 10 passes an electric current through the current electrode 20A and measures the potential difference generated in the current path between the electrode units 20 in contact with the person being measured using the voltage electrode 20B. Based on this potential difference, the analyzer 10 calculates the electrical resistance of the person being measured as bioimpedance (hereinafter referred to as "BI") and determines the ingested components based on the BI. 【0032】 In the example shown in Figure 1, the current electrode 20A and the voltage electrode 20B are elongated vertically, but they are not limited to this and may be elongated horizontally in the circumferential direction of the analyzer 10. 【0033】 The monitor 24 is, for example, a touch panel display, which allows the person being measured to perform input operations on the analyzer 10 and outputs the results of the ingested components. The power switch 26 accepts on and off operations for the analyzer 10. 【0034】 Figure 2 is a functional block diagram of the analyzer 10 of this embodiment. The analyzer 10 comprises a BI calculation unit 30, a body temperature acquisition unit 32, a determination unit 34, a monitor control unit 36, a storage unit 38, and a communication unit 40. The functions performed by the BI calculation unit 30, body temperature acquisition unit 32, and determination unit 34 shown in Figure 2 may, for example, be executed by the calculation unit of the analyzer 10 when a program is started, or they may be realized by individual hardware such as an ASIC (Application Specific Integrated Circuit). 【0035】 The BI calculation unit 30 calculates the subject's BI (hereinafter referred to as "measured BI") based on the measurement results obtained using multiple electrode units 20 that come into contact with the subject. 【0036】 The body temperature acquisition unit 32 acquires the body temperature of the person being measured from the body temperature measurement unit 22 as the actual measured body temperature. 【0037】 The determination unit 34 determines the ingested components of the subject from the daily time-series changes in the measured BI calculated by the BI calculation unit 30. Specifically, the determination unit 34 determines the ingested components of the subject based on the time-series changes in the measured BI and reference change information. In other words, as will be described in detail later, the determination unit 34 determines the ingested components of the subject by utilizing the phenomenon in which the subject's BI changes according to the components they ingest. 【0038】 The reference change information is information that shows the time change in BI according to the components ingested by a person, and is stored in the memory unit 42 in advance. The reference change information in this embodiment includes reference PFC information, reference dehydration information, and reference salt excess information, as will be described in detail later. 【0039】 The monitor control unit 36 ​​controls the monitor 24 to display the determination result from the determination unit 34. 【0040】 The memory unit 38 is, for example, a non-volatile memory that stores various data and programs used for analysis processing. The various data include reference change information, the results of the determination of ingested components, and so on. 【0041】 The communication unit 40 transmits and receives data between the device and other information processing devices such as smartphones and servers owned by the person being measured. 【0042】 The determination unit 34 includes a PFC determination unit 50 and a physical condition determination unit 52. 【0043】 The PFC determination unit 50 uses reference PFC information as reference change information. Reference PFC information is information that shows the time change in BI for each ingested component when a person ingests protein, fat, and carbohydrates. In the following explanation, protein, fat, and carbohydrates will be collectively referred to as nutrients. 【0044】 Here, diet-induced thermogenesis (DIT) is known, which determines the degree of heat production due to food intake and digestion / absorption by detecting changes in body temperature before and after meals. Specifically, meals high in protein result in a higher rise in postprandial body temperature, while meals high in carbohydrates and lipids result in a lower rise in postprandial body temperature. 【0045】 There is a correlation between these postprandial body temperature changes and short-term changes in BI (time changes ranging from several tens of minutes to several hours), and as shown in Figure 3, BI decreases as body temperature rises. The dashed line in Figure 3 is an approximation line. Therefore, the PFC determination unit 50 identifies the ingested components of the subject from the time change of the measured BI. 【0046】 Therefore, the PFC determination unit 50 determines whether the subject's ingested component is protein, lipid, or carbohydrate, based on the time change of the measured BI and the time change of each nutrient indicated by the reference PFC information. This makes it possible to identify whether the subject ingested protein, lipid, or carbohydrate as a nutrient. 【0047】 Figure 4 shows the change in bioelectrical impedance (BI) over time in response to nutrients ingested by a person. The vertical axis of Figure 4 is the reciprocal of the bioelectrical impedance Z (BI), which is 1 / Z, and the horizontal axis is time. Figure 4(A) shows the change in BI over time when lipids are ingested, with the amount of ingested lipids increasing in the order of dashed line f1, dashed line f2, and solid line f3. Figure 4(B) shows the change in BI over time when carbohydrates are ingested, with the amount of ingested lipids increasing in the order of dashed line c1, dashed line c2, and solid line c3. Figure 4(C) shows the change in BI over time when protein is ingested, with the amount of ingested lipids increasing in the order of dashed line p1, dashed line p2, and solid line p3. 【0048】 As shown in Figure 4, when a person ingests lipids, carbohydrates, and proteins, the peak height of the 1 / Z ratio is lowest for lipids, followed by carbohydrates, and then proteins. Furthermore, for all of lipids, carbohydrates, and proteins, the greater the intake, the longer it takes for the 1 / Z ratio to return to its pre-intake level. In the following explanation, the time it takes for the 1 / Z ratio to return to its pre-intake level will be referred to as the time change range. 【0049】 As shown in Figure 4, the reference PFC information includes the maximum change in BI (maximum value of 1 / Z) for each nutrient when a person ingests protein, lipid, or carbohydrate. The PFC determination unit 50 of this embodiment determines whether the nutrient ingested by the person being measured is protein, lipid, or carbohydrate by comparing the maximum change in measured BI with the maximum change in protein, lipid, or carbohydrate indicated by the reference PFC information. 【0050】 In this embodiment, the PFC determination unit 50 determines the nutrients consumed by the subject based on the maximum change in BI for each nutrient, as described above, using the maximum value of 1 / Z. However, the PFC determination unit 50 is not limited to this, and may also determine the nutrients consumed by the subject based on the minimum value of Z for each nutrient. 【0051】 Furthermore, as shown in Figures 4(A) to (C), the slopes from the intake of lipids, carbohydrates, and proteins until 1 / Z reaches its maximum differ. Therefore, the PFC determination unit 50 may determine the nutrients ingested by the subject based on the slope of the time change of 1 / Z or Z. 【0052】 Furthermore, the reference PFC information includes the relationship between the intake of nutrients such as protein, lipids, and carbohydrates, and the time it takes for the BI to return to its pre-nutrition level (hereinafter referred to as the "time change range"). As shown in Figure 4, this time change range varies depending on the intake of each nutrient. In other words, the higher the intake of a nutrient, the larger the time change range. 【0053】 Therefore, the PFC determination unit 50 determines the amount of nutrients ingested by the subject based on the time range of change in the measured BI until it returns to the state before nutrient intake and the first reference information. Specifically, the PFC determination unit 50 in this embodiment determines the time range of change in the measured BI from the time it starts to change until it returns to its original state. Then, after identifying the nutrients ingested by the subject, the PFC determination unit 50 determines the amount of nutrient intake by comparing the time range of change for each nutrient intake amount shown in the reference PFC information with the time range of change in the measured BI. Note that the time range of change for each nutrient intake amount included in the reference PFC information and the time range of change in the measured BI are, for example, the full width at half maximum. 【0054】 In this way, the PFC determination unit 50 can identify the nutrients ingested by the subject from the peak height of the measured BI, and can quantitatively determine the amount of nutrients ingested by the subject from the time range of change of the measured BI. 【0055】 Furthermore, if the PFC determination unit 50 finds that the identified nutrient is above a predetermined amount, it may inform the subject via the monitor 24 or the like that this indicates an excessive intake of that nutrient. The predetermined amount here may be, for example, a predetermined standard value, or a value obtained by multiplying the average value over the past few days by a predetermined multiplier. 【0056】 Furthermore, the reference PFC information may include the maximum change in BI and the time range of change for each intake amount when protein, lipids, and carbohydrates are mixed in predetermined proportions. For example, the reference PFC information may include the maximum change in BI and the time range of change for each intake amount when 50% protein and 50% lipids are consumed, or when 50% protein, 25% lipids, and 25% carbohydrates are consumed. This makes it possible to identify the nutrients consumed by the subject even when multiple nutrients are consumed simultaneously. 【0057】 Furthermore, the reference PFC information described above is generated, for example, from measured values ​​when multiple adults ingest nutrients, but it is not limited to this and may also be generated from the measured values ​​of the person being measured. In other words, the reference PFC information may be generated by obtaining the time change in BI within a predetermined time after the person being measured ingests protein, lipids, or carbohydrates. By pre-generating reference PFC information tailored to the person being measured, the components ingested by the person being measured can be identified more accurately. 【0058】 To generate reference PFC information tailored to the subject, the subject is given a protein-based diet (or prescribed supplement). The time-dependent change in BI (Biometric Index) is recorded for a predetermined period after ingestion, and the subject's 100% protein baseline change is obtained. Similarly, the subject is given a carbohydrate-based diet and a lipid-based diet, and the subject's 100% carbohydrate-based and lipid baseline changes are obtained, which are then used as reference PFC information corresponding to the subject. Alternatively, a balanced mixed diet containing 50% protein and 50% lipid may be given to the subject as the prescribed diet, and the time-dependent change in BI may be obtained. 【0059】 Furthermore, the reference PFC information may include the time-dependent changes in body temperature for each ingested component when a person consumes protein, lipids, and carbohydrates. In this form of reference PFC information, as an example, the reference PFC information includes the maximum change in body temperature and the range of change over time when protein, lipids, and carbohydrates are ingested. Note that the maximum change in body temperature is highest for carbohydrates, lipids, and proteins, in that order. 【0060】 The PFC determination unit 50 then determines whether the nutrient ingested by the subject is protein, lipid, or carbohydrate, based on the combination of the measured body temperature and measured BI, and the reference PFC information. For example, the PFC determination unit 50 compares the average value of the rate of change of the measured body temperature and the rate of change of the measured BI(1 / Z) with the average value of the rate of change of body temperature and the rate of change of BI(1 / Z) for each nutrient included in the reference PFC information to identify the nutrient ingested by the subject. This allows for a more accurate identification of the components ingested by the subject. Alternatively, the average value of the time range of change of the measured body temperature and the time range of change of the measured BI may be used to identify the amount of nutrients ingested by the subject. 【0061】 Furthermore, the PFC determination unit 50 can differentiate between the subject's dehydration state and nutrient intake by taking into account the time-dependent changes in body temperature. If the subject is dehydrated, as will be described later, body temperature will rise first and the BI will increase, but as the subject takes in water, the BI will decrease and body temperature will decrease. On the other hand, if the decrease in body temperature and the increase in BI are the same, it can be determined that the subject is not dehydrated and is taking in nutrients. This improves the accuracy of the subject's determination of nutrient intake. 【0062】 The physical condition determination unit 52 determines the physical condition of the person being measured based on the relationship between the time change of the actual body temperature acquired by the body temperature acquisition unit 32 and the time change of electrical resistance, as well as reference change information. The reference change information used by the physical condition determination unit 52 is reference dehydration information and reference salt excess information. 【0063】 Figure 5 shows the time-dependent changes in BI and body temperature according to a person's physical condition. Figure 5(A) shows the case where the person is dehydrated, and Figure 5(B) shows the case where the person has excessive salt intake. 【0064】 The reference dehydration information, as shown in Figure 5(A), indicates that body temperature rises before the rise in BI, and that body temperature decreases along with BI upon fluid intake. The physical condition determination unit 52 compares the combination of measured BI and measured body temperature with the reference dehydration information, and if they match, the physical condition determination unit 52 can determine that the person being measured is dehydrated. In other words, if the measured body temperature rises before the rise in measured BI, and then decreases along with the measured BI, the person being measured is determined to be dehydrated. 【0065】 The reference salt excess information, as shown in Figure 5(B), indicates that while the time change of body temperature remains constant, the BI rises and then falls. When a person ingests excessive salt, the BI rises first due to the absorption of salt (Na), and then falls due to the subsequent osmotic pressure change that draws in water. Therefore, excessive salt intake results in the time change of BI shown in Figure 5(B). On the other hand, salt excess does not affect body temperature, so the body temperature remains constant. The physical condition determination unit 52 then compares the combination of the measured BI and measured body temperature with the reference salt excess information, and if they match, it can identify that the subject is experiencing edema due to excessive salt intake. In other words, if the time change of the measured body temperature remains constant, while the measured BI rises and then falls, it is determined that the subject has consumed too much salt. 【0066】 Figure 6 is a flowchart showing the flow of the analysis process performed by the analyzer 10. The analysis process begins when the power switch 26 is turned on after the analyzer 10 has been attached to the person being measured. 【0067】 First, in step S100, the calculation of the subject's measured BI and acquisition of their measured body temperature begin. 【0068】 In the next step, S102, the determination unit 34 determines whether the measured BI has fluctuated by a predetermined value or more. If the determination is positive, the process proceeds to step S104. A fluctuation of a predetermined value or more refers to a significant fluctuation greater than the measurement error, and the predetermined value is set in advance. On the other hand, if the determination is negative, the calculation of the subject's measured BI and acquisition of their measured body temperature are repeatedly continued. 【0069】 In the next step S104, based on the measured BI and measured body temperature, the PFC determination unit 50 performs a PFC determination process to identify the nutrients consumed by the person being measured, and the physical condition determination unit 52 performs a physical condition determination process to determine the physical condition of the person being measured. 【0070】 The determination result will be one of the following: identification of the nutrients consumed by the subject through the PFC determination process, identification of whether the subject is dehydrated, or identification of whether the subject has excessive salt intake. In other words, the determination result will not be, for example, identification of the nutrients consumed by the subject and identification of whether the subject is dehydrated. 【0071】 Furthermore, as mentioned above, when the subject ingests nutrients such as protein, lipids, and carbohydrates, the time changes of the measured body temperature and the measured BI will be approximately identical. On the other hand, when the subject is dehydrated or has consumed too much salt, the degree of agreement between the time changes of the measured body temperature and the measured BI will be low. Therefore, if the time changes of the subject's measured body temperature and measured BI are identical, the PFC determination unit 50 may perform a PFC determination process, and if the time changes of the subject's measured body temperature and measured BI are not identical, the physical condition determination unit 52 may perform a physical condition determination process. 【0072】 In the next step S106, the memory unit 38 stores the result of the PFC determination process or the physical condition determination process. 【0073】 In the next step, S108, the monitor control unit 36 ​​outputs (displays) the determination result to the monitor 24. The determination result may also be output (transmitted) to another information processing device via the communication unit 40. 【0074】 Furthermore, while the processes from step S104 to step S108 are being executed, the calculation of the measured BI and the acquisition of the measured body temperature continue, and the analysis process continues until the power of the analyzer 10 is turned off. 【0075】 (Second Embodiment) A second embodiment of this model will be described below. The analyzer 10 of this model corrects the intake of nutrients determined from the BI change over a day-to-day time series, based on the changes in the subject's body composition over a day or more. 【0076】 Figure 7 is a schematic diagram of the analysis system 70 of this embodiment. The analysis system 70 comprises an analysis device 10 and a body composition analyzer 80. The body composition analyzer 80 shown in Figure 7 comprises hand grips 82R, 82L equipped with electrodes, foot electrodes 84R, 84L, and a weighing scale. The body composition analyzer 80 calculates the bioelectrical impedance (BI) of the whole body and each body part of the subject by measuring the potential difference generated in the current paths of the hand grips 82R, 82L and foot electrodes 84R, 84L, and calculates body composition values ​​based on the subject's BI and weight. The body composition values ​​calculated by the body composition analyzer 80 include fat percentage, fat mass, lean body mass, muscle mass, visceral fat mass, visceral fat level, visceral fat area, subcutaneous fat mass, basal metabolic rate, bone mass, body water percentage, BMI, intracellular fluid volume, extracellular fluid volume, etc. 【0077】 In this embodiment, the person being measured acquires their body composition values ​​using the body composition analyzer 80 at least once a day. The body composition values ​​acquired by the body composition analyzer 80 are transmitted to the analyzer 10 via the communication function. 【0078】 The body composition analyzer 80 may also be configured without hand grips 82R and 82L, and instead be equipped with foot electrodes 84R and 84L and a weighing scale. Furthermore, the body composition analyzer 80 may calculate body composition values ​​based on the potential difference generated in the current path between the electrode section 20 of the analyzer 10 worn by the person being measured and the electrodes of the body composition analyzer 80. In cases where the analyzer 10 and the body composition analyzer 80 cannot transmit or receive information via communication, the person being measured may input the body composition values ​​acquired by the body composition analyzer 80 into the analyzer 10. 【0079】 Alternatively, the analysis system 70 may consist of two or more analyzers 10 worn by the person being measured, and body composition values ​​may be calculated based on the potential difference generated in the current path between the electrode sections 20 of the two or more analyzers 10 and the person's weight, which is measured separately. 【0080】 Figure 8 is a functional block diagram relating to the analytical functions of the analytical apparatus 10 of this embodiment. Note that components in Figure 8 that are the same as those in Figure 2 are denoted by the same reference numerals as in Figure 2, and their descriptions are omitted. 【0081】 The determination unit 34 of this embodiment includes an intake correction unit 54. The intake correction unit 54 corrects the amount of ingested components (nutrients) determined by the PFC determination unit 50 based on changes in the subject's body composition over one day or more (hereinafter referred to as the "ingested component correction function"). 【0082】 The intake correction function of the intake correction unit 54 will be explained with reference to the schematic diagram in Figure 9. In Figure 9, the continuous contact BI is the amount of lipid intake by the subject determined from the daily time-series change in BI measured by the analyzer 10. The body composition BI is the amount of lipid in the subject calculated from the BI measured by the body composition analyzer 80. In other words, the body composition BI is the amount of lipid in the subject over a day. 【0083】 The intake correction unit 54 corrects the daily lipid intake of the subject based on the daily change in the subject's lipids, for example, using equation (1) below. Note that Figure 9 and equation (1) show the case of 4 days for the daily change in the subject's lipids ΔFATkg, but this is just an example, and the lipid intake of the subject should be corrected based on a change in lipids ΔFATkg over one day or more. 【0084】 ΔFATkg(FATkg(4)-FATkg(0))=a*(fat(1)+fat(2)+fat(3)+fat(4)) ···(1) 【0085】 As shown in equation (1), the change in the subject's lipids ΔFATkg is correlated with the total amount of lipids fat(n) consumed over the corresponding number of days. Therefore, the intake correction unit 54 corrects the lipid intake fat(n) so that the change in lipids ΔFATkg matches the total amount of lipids fat(n). As an example of the correction method, the daily lipid intake fat(n) is increased or decreased evenly so that the change in lipids ΔFATkg matches the total amount of lipids fat(n). 【0086】 Furthermore, not all of the lipids ingested by the subject are continuously stored in the body. Ingested lipids are consumed by the subject's daily activities. For this reason, a term indicating the subject's daily activity level may be added to the right-hand side of equation (1). This allows for a more accurate correction, as the amount of lipids consumed by activity is taken into account in addition to the amount of lipids ingested by the subject. As an example, the activity level may be the value calculated by an activity tracker worn by the subject. 【0087】 Furthermore, although Figure 9 and equation (1) correspond to lipids as nutrients, the intake correction unit 54 may correct the amount of protein or carbohydrates ingested by the subject using body composition values ​​that correlate with protein or carbohydrate intake. 【0088】 (Third embodiment) A third embodiment of this model will be described below. The analyzer 10 of this model derives advice for maintaining health from the person being measured, based on the determination result from the determination unit 34. 【0089】 Figure 10 is a functional block diagram relating to the analytical functions of the analytical apparatus 10 of this embodiment. The analytical apparatus 10 of this embodiment includes an advice derivation unit 60. 【0090】 The advice generation unit 60 generates advice for the person being measured to maintain their health, based on the judgment result from the judgment unit 34. The advice generated is, for example, patterned according to the judgment result, and this pattern is stored in the memory unit 38. The generated advice is then presented to the person being measured, for example, by being displayed on the monitor 24 or output as audio from a speaker (not shown). 【0091】 Next, I will explain some specific examples of the advice that will be derived. 【0092】 For example, if the physical condition determination unit 52 determines that the subject has consumed too much salt, the advice output unit 60 will advise the subject to increase their potassium (K) intake. This is to encourage the excretion of sodium (Na) from the subject before blood pressure rises due to excessive salt intake. Specific foods rich in potassium may also be suggested. These foods could include spinach and lettuce as vegetables, bananas and apples as fruits, and avocados and seaweed as other foods. Alternatively, specific supplements or ion drinks may be suggested as foods. 【0093】 Furthermore, even after a predetermined amount of time has passed since the determination of excessive salt intake, the BI may still show a significant decrease, and the subject may continue to experience swelling. In such cases, the advice output unit 60 may suggest consuming a diuretic beverage as advice. Examples of diuretic beverages include coffee and oolong tea. However, the advice may also include encouraging the excretion of sodium through sweat via exercise or bathing. When this advice is given, it may also include suggesting hydration. 【0094】 Furthermore, if the PFC determination unit 50 determines that the carbohydrate intake is excessive, the advice output unit 60 will advise the subject to consume foods and beverages rich in dietary fiber to suppress carbohydrate absorption. Foods rich in dietary fiber include, for example, vegetables, fruits, seaweed, and beans. Beverages rich in dietary fiber include, for example, teas with added functional properties such as indigestible dextrin. 【0095】 Furthermore, the advice output unit 60 may suggest that the subject perform light exercise within a predetermined time (for example, a few minutes to 60 minutes) after carbohydrate intake. The reason for this is to allow glucose to be taken up by skeletal muscles before the blood glucose level rises or insulin is secreted due to absorbed carbohydrates, thereby preventing excessive insulin secretion caused by a rapid rise in blood glucose levels. Specific examples of light exercise may be suggested, such as rotating the arms and legs, stepping in place, or stretching. 【0096】 Furthermore, the advice generation unit 60 may generate advice based on changes in BI, weight, and body composition over several days. The advice generation unit 60 may, for example, select and present nutrients that should be consumed according to the subject's physique or body composition. The nutrients to be consumed may, for example, be protein according to the subject's muscle mass and fat-burning components according to the subject's body fat percentage. The advice generation unit 60 may also, for example, present an exercise menu according to the subject's physique or body composition. The exercise menu may, for example, be an aerobic exercise menu according to the subject's body fat percentage or visceral fat, or a strength training menu according to the subject's muscle score or SMI (Skeletal Muscle Index) assessment. 【0097】 (Fourth Embodiment) The following describes a fourth embodiment of this embodiment. In the above embodiment, the components (nutrients, salt, etc.) ingested by the person being measured were determined, but the analyzer 10 of this embodiment determines whether or not the person being measured has ingested a predetermined specific component (hereinafter referred to as "specific component"). 【0098】 In this embodiment, the analyzer 10 is configured so that the specific component to be determined is set by the person being measured. The specific component to be set is, for example, one of the detectable proteins, lipids, carbohydrates, and salts. The determination unit 34 then determines whether or not the person being measured has ingested the set specific component. 【0099】 Furthermore, the determination unit 34 of this embodiment may determine the intake status of a set specific component (for example, by comparison with the previous day). Depending on the intake status, it may also determine whether the person being measured has ingested an excessive amount of the specific component. The determination of whether an excessive amount has been ingested is made by determining whether the amount of the specific component ingested is above a predetermined amount. The predetermined amount here may be, for example, a predetermined standard value, or a value obtained by multiplying the average value over the past few days by a predetermined multiple. 【0100】 Although the present invention has been described above using the embodiments described above, the technical scope of the present invention is not limited to the scope described in the embodiments above. Various modifications or improvements can be made to the embodiments above without departing from the spirit of the invention, and such modified or improved forms are also included in the technical scope of the present invention. 【0101】 In the above embodiment, a configuration was described in which the analyzer 10 continuously calculates the subject's BI after the power switch 26 is turned on, but the present invention is not limited to this. For example, the analyzer 10 may be provided with a meal start button. In this configuration, the subject wearing the analyzer 10 presses the meal start button when they start eating. As a result, the analyzer 10 measures the subject's BI for a predetermined time (e.g., 1 hour) from the time the meal start button is pressed and determines the nutrients ingested. 【0102】 In the above embodiment, a configuration in which the analyzer 10 determines the ingested components of the person being measured has been described, but the present invention is not limited thereto. For example, as shown in Figure 11, an information processing device 100 such as a smartphone owned by the person being measured may have a BI calculation unit 30, a body temperature acquisition unit 32, a determination unit 34, a monitor control unit 36, a storage unit 38, and a communication unit 40, etc. In this configuration, the information processing device 100 receives the actual body temperature and the voltage detected by the voltage electrode 20B from the analyzer 10 and determines the ingested components of the person being measured. In this configuration, the analyzer 10 does not need to have a monitor 24. 【0103】 Furthermore, the information processing device 100 may also be a server. In this configuration, the server's determination of the ingested components of the person being measured is stored on the server. The person being measured then checks the determination results stored on the server by displaying them on a smartphone or similar device. 【0104】 Furthermore, the analyzer 10 may be equipped with three or more electrode units 20, as shown in Figure 11 (in the example in Figure 11, the analyzer 10 is equipped with four electrode units 20). In this configuration, for example, when the body condition determination unit 52 determines changes in the salt and water content of the subject, the BI calculated from the potential difference between the electrode units 20 with the shortest distance is used. This is because the effect of salt changes is greater on lymphatic fluid and capillaries flowing on the surface of the human body. 【0105】 On the other hand, when determining the nutrients ingested by the subject using the PFC determination unit 50, the BI calculated from the potential difference between electrode units 20 located further away than those used by the physical condition determination unit 52 is used. This is because temperature changes due to nutrient intake are more likely to appear in the deeper parts of the human body. [Explanation of symbols] 【0106】 10 Analyzer 30 BI Calculation Unit (Calculation Means) 32 Body temperature acquisition unit (body temperature acquisition means) 34 Judgment unit (judgment means) 54. Intake Correction Unit (Correction Means) 60. Advice Derivation Unit (Advice Derivation Means)

Claims

[Claim 1] A calculation means for calculating the electrical resistance of a person being measured based on measurement results using multiple electrode parts that come into contact with the person being measured, A determination means that determines whether the component ingested by the person being measured is protein, lipid, or carbohydrate, based on reference information showing the time change of electrical resistance corresponding to the component ingested by the person and the time change of electrical resistance calculated by the calculation means. An analytical device equipped with the following features. [Claim 2] A calculation means for calculating the electrical resistance of a person being measured based on measurement results using multiple electrode parts that come into contact with the person being measured, A determination means that determines whether or not the person being measured has ingested protein, lipids, or carbohydrates as a specific component, based on reference information showing the time change of electrical resistance corresponding to the components ingested by the person and the time change of electrical resistance calculated by the calculation means, An analytical device equipped with the following features. [Claim 3] The aforementioned reference information includes the relationship between the amount of the component ingested and the time it takes for the electrical resistance to return to its state before the component was ingested. The analytical apparatus according to claim 1 or 2, wherein the determination means determines the amount of the component ingested by the person being measured, based on the time it takes for the electrical resistance calculated by the calculation means to return to the state before ingestion of the component, and the reference information. [Claim 4] The analytical apparatus according to any one of claims 1 to 3, further comprising a correction means for correcting the amount of the component determined by the determination means based on the change in the body composition of the person being measured over a period of one day or more. [Claim 5] The analytical apparatus according to any one of claims 1 to 4, wherein the reference information is information generated by acquiring the change in electrical resistance over a predetermined period of time after the subject ingests the component. [Claim 6] The analytical apparatus according to any one of claims 1 to 5, wherein the reference information shows the change in electrical resistance for each component when a person ingests the components, namely proteins, lipids, and carbohydrates. [Claim 7] A calculation means for calculating the electrical resistance of a person to be measured based on the measurement results using a plurality of electrode parts that come into contact with the person to be measured, A determination means for determining the component ingested by the person being measured, based on reference information showing the time change of electrical resistance corresponding to the component ingested by the person and the time change of electrical resistance calculated by the calculation means, A body temperature acquisition means for acquiring the body temperature of the person being measured, Equipped with, The aforementioned reference information includes the change in body temperature over time for each of the aforementioned components when a person ingests them. The analytical apparatus according to any one of claims 1 to 5, wherein the determination means determines the amount of excess salt or water in a dehydrated state as the component ingested by the person being measured, based on the combination of the body temperature obtained by the body temperature acquisition means and the electrical resistance calculated by the calculation means and the reference information. [Claim 8] The analytical apparatus according to claim 7, wherein the reference information indicates that the body temperature rises before the increase in electrical resistance, and that the body temperature decreases along with the electrical resistance upon fluid intake. [Claim 9] The analytical apparatus according to claim 7, wherein the reference information indicates that the time change of body temperature is constant, while the electrical resistance increases and then decreases. [Claim 10] The analytical apparatus according to any one of claims 1 to 9, wherein the reference information shows the change in electrical resistance for each component when a person ingests excess salt or water in a dehydrated state. [Claim 11] The analytical apparatus according to any one of claims 1 to 10, further comprising an advice deriving means for deriving advice for the person being measured to maintain their health in accordance with the determination result by the determination means. [Claim 12] The analytical apparatus according to any one of claims 1 to 11, wherein the plurality of electrode portions can be attached to the body of the person being measured. [Claim 13] A first step of calculating the electrical resistance of the person being measured based on the measurement results using multiple electrode parts that come into contact with the person being measured, A second step in which, based on reference information showing the time change of electrical resistance corresponding to the components ingested by the person and the time change of electrical resistance calculated in the first step, the component ingested by the person being measured is determined to be protein, lipid, or carbohydrate. Analytical methods that include [specific characteristics / features]. [Claim 14] Computers, A calculation means for calculating the electrical resistance of a person being measured based on measurement results using multiple electrode parts that come into contact with the person being measured, A determination means that determines whether the component ingested by the person being measured is protein, lipid, or carbohydrate, based on reference information showing the time change of electrical resistance corresponding to the component ingested by the person and the time change of electrical resistance calculated by the calculation means. An analysis program that enables functionality through this process. [Claim 15] A first step of calculating the electrical resistance of the person being measured based on the measurement results using multiple electrode parts that come into contact with the person being measured, A second step of determining whether the person being measured ingested protein, lipids, or carbohydrates as specific components, based on reference information showing the time change of electrical resistance corresponding to the components ingested by the person and the time change of electrical resistance calculated in the first step, Analytical methods that include [specific characteristics / features]. [Claim 16] Computers, A calculation means for calculating the electrical resistance of a person being measured based on measurement results using multiple electrode parts that come into contact with the person being measured, A determination means that determines whether or not the person being measured has ingested protein, lipids, or carbohydrates as a specific component, based on reference information showing the time change of electrical resistance corresponding to the components ingested by the person and the time change of electrical resistance calculated by the calculation means, An analysis program that enables functionality through this process. [Claim 17] A first step in which a calculation means calculates the electrical resistance of a person to be measured based on the measurement results using a plurality of electrode parts that come into contact with the person to be measured, A second step in which the determination means determines the component ingested by the person being measured based on reference information showing the time change of the electrical resistance corresponding to the component ingested by the person and the time change of the electrical resistance calculated by the calculation means, It has, The aforementioned reference information includes the change in body temperature over time for each of the aforementioned components when a person ingests them. The determination means determines, based on the combination of the subject's body temperature obtained by the body temperature acquisition means and the electrical resistance calculated by the calculation means, and the reference information, whether the subject has ingested an excess of salt or water in a dehydrated state. Analysis method. [Claim 18] A computer, A calculation means for calculating the electrical resistance of a person being measured based on measurement results using multiple electrode parts that come into contact with the person being measured, A determination means for determining the component ingested by the person being measured, based on reference information showing the time change of electrical resistance corresponding to the component ingested by the person and the time change of electrical resistance calculated by the calculation means, and make it work The aforementioned reference information includes the change in body temperature over time for each of the aforementioned components when a person ingests them. The determination means determines, based on the combination of the subject's body temperature obtained by the body temperature acquisition means and the electrical resistance calculated by the calculation means, and the reference information, whether the subject has ingested an excess of salt or water in a dehydrated state. Analysis program.

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