JP2002267662A - Method and apparatus for measuring salt intake amount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for measuring salt intake amount, wherein the salt intake amount in one day of a human can be measured simply and precisely. SOLUTION: In the method of measuring the salt intake amount, a salt amount in first urine early in the morning discharged by the human is measured, the salt amount discharged in one day by the human is found on the basis of a correlation between the salt amount in the first urine early in the morning and the salt amount discharged in one day by the human, and the salt intake amount in one day of the human is calculated on the basis of the salt amount discharged in one day be the human.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for measuring salt intake and a device for measuring salt intake.

[0002]

2. Description of the Related Art Excessive intake of salt is known to cause various diseases such as hypertension. For this reason, measuring and managing the daily salt intake of humans is extremely important for maintaining and improving health.

[0003] As a method of measuring the daily salt intake of humans, a method of directly measuring the salt content in foods to be ingested is generally used. However, in this method, it is necessary to measure the salt content individually for all the foods to be consumed, and furthermore, it is necessary to add up the respective measured salt content,
It was complicated and troublesome. In addition, it was extremely difficult to measure the amount of salt for each of the foods actually put into the mouth in a day.

In view of these points, Japanese Patent Application Laid-Open No. H10-2135
No. 84 discloses that the total amount of salt excreted by a human in a day is determined by measuring the concentration of urinary salt and multiplying the result by the total amount of urine excreted in a day. A method for calculating daily salt intake is described. That is, a method of measuring a human's daily salt intake using a relationship that a human's daily salt intake is equal to the daily salt excreted in urine.

[0005] Such a method is much simpler than a method of calculating by adding the amounts of salt in individual foods, and is an excellent method for measuring the amount of salt intake. However, this method requires one day of urine collection to measure the total amount of urine excreted in one day, which is not only complicated, but also requires a place, equipment, and equipment to accumulate urine, It has been extremely difficult for a home patient with hypertension, who needs to measure the daily salt intake, to manage the salt intake by personally measuring it at home or the like.

The above-mentioned publication also discloses a method in which the total amount of urine excreted in one day is not determined by collecting urine, but the average daily total urine amount of a human is used. However, although the average daily total urine volume of a human being is a certain measure of the actual daily total urine volume, it varies greatly depending on the daily water intake and the amount of sweating. There is a possibility that the salt intake calculated by using the method may include a large error, and the accuracy is low.

[0007]

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a salt intake measuring method and a salt intake measuring device capable of easily and accurately measuring a human daily salt intake. The purpose is to do.

[0008]

The invention according to claim 1 (hereinafter referred to as "the present invention 1") measures the amount of salt in the first urine in the early morning excreted by a human, and determines the amount of salt in the first urine in the early morning. The amount of salt excreted by humans per day is calculated from the correlation between the amount of salt excreted by humans and the amount of salt excreted by humans in a day, and the daily intake of human salt is calculated based on the amount of salt excreted by humans in one day. It is a method for measuring salt intake.

The invention according to claim 2 (hereinafter referred to as "the present invention 2") is a measuring device for measuring the daily salt intake of a human, and the salt concentration in urine in the early morning excreted by the human. Sensor unit for measuring the urine volume of the first urine in the early morning, the input unit for inputting the urine volume of the first urine, Is calculated from the correlation between the amount of salt in urine and the amount of salt excreted by humans in the early morning, which is stored in advance, and the amount of salt excreted by humans in one day is calculated. And a display unit for displaying the calculated daily salt intake based on the calculated daily salt intake based on the calculated salt intake.

[0010] The invention according to claim 3 (hereinafter referred to as the present invention 3) is a measuring device for measuring daily salt intake of a human, wherein the salt concentration in urine is excreted early in the morning when the human excretes. And a sensor unit for measuring urine amount, multiplying the measured urinary salt concentration and the urine amount to calculate the amount of salt in the first urine in the early morning, and storing the salt amount in the first urine in the early morning stored in advance. Calculates the amount of salt excreted by humans in a day from the correlation between the amount and the amount of salt excreted by humans in a day, and calculates the daily salt intake of humans from the amount of salt excreted by the human in one day And a display unit for displaying the calculated daily salt intake.

Further, in the present inventions 2 and 3, the sensor for measuring the salt concentration in urine also includes a salt intake measuring device constituted by a sodium selective electrode. Hereinafter, the present invention will be described in detail.

In the method for measuring salt intake according to the present invention,
First, the amount of salt in urine is measured in the early morning of human excretion. Here, "early urine in the early morning" refers to urine excreted first after getting up. The amount of salt in urine can be calculated by measuring the concentration of urine and the amount of urine, respectively, and multiplying the concentration of salt and the amount of urine.

It is particularly preferable that the above-mentioned urine salt concentration is measured by an electrode method. This is because the method is simpler than the method using a test paper and is suitable for measurement at home.

As the electrode method, for example, a conductivity method can be used. Specifically, for example, Sekisui digital salt meter SS-31A (manufactured by Sekisui Chemical Co., Ltd.),
A commercially available digital salt meter such as a salt meter (manufactured by Sinal) or a compact salt meter CARDY (manufactured by Horiba, Ltd.) using a sodium selective electrode can be used.

In order to further improve the accuracy, it is more preferable to perform a process using a correction formula in the measurement by the conductivity method in order to eliminate an error due to potassium or magnesium other than the salt measured together. However, a compact salt meter CAR that can selectively detect salt.
This is not necessary when a measuring device using a sodium selective electrode such as DY (manufactured by Horiba, Ltd.) is used.

The method of measuring the amount of urine in the first morning in the morning is not particularly limited, and after the subject discharges urine in a container with a measuring scale,
The amount of urine may be measured visually, or may be measured by other electronic measuring instruments.

In the method for measuring salt intake according to the present invention,
Next, using the measured value of the amount of salt in urine in the early morning measured as described above, the amount of salt in urine and the amount of salt excreted by humans in one day, which were obtained in advance, were determined in advance. From this correlation, the amount of salt excreted by humans per day is determined.

There is a certain correlation between the amount of urinary salt in the early morning and the amount of salt excreted by humans in a day. This correlation is expressed by, for example, a regression equation I shown below. Can be. [Daily excretion salt amount / g] = a × [Early morning first urinary salt amount / g] + b where I and a are 1.5 <a <5 and 2 <b <8.

The regression equation can be expressed by a function using a logarithm or a higher-order function in addition to the linear function.

Further, the correlation does not necessarily have to be expressed by the regression equation as described above. A table showing the correspondence between the amount of salt in urine and the amount of salt excreted by humans in the early morning is prepared. In advance, it may be determined based on this table.

In the method for measuring salt intake according to the present invention,
Next, the daily salt intake of the human is calculated based on the salt excreted by the human in one day. Usually, most of the salt taken up in the body is considered to be excreted as urine, so the total amount of salt excreted by the human in a day may be regarded as a human's daily salt intake, The amount of salt excreted by the human in a day can be further corrected in consideration of the amount of salt excreted outside the body due to sweat or the like, and a more accurate human daily salt intake can be calculated.

The apparatus for measuring the amount of salt intake according to the second aspect of the present invention comprises a sensor unit, an input unit, a calculation unit, and a display unit. In the sensor section, the salt concentration in urine is measured in the early morning of human excretion by a conductivity method, a selective electrode method, or the like.

It is particularly preferred that the sensor section is constituted by a sodium selective electrode. This is because an error due to the presence of potassium, magnesium, or the like in urine can be reliably prevented.

In the input section, the urine volume of the first urine in the early morning is input by the measurer. In the arithmetic unit, first, the salt amount in urine in the early morning is calculated by multiplying the salt concentration in urine measured by the sensor unit and the urine amount input from the input unit. Next, the amount of salt in urine in the early morning is substituted into, for example, the regression equation I to calculate the amount of salt excreted by humans in one day. Furthermore, by correcting the amount of salt excreted by the human in a day as needed, the daily salt intake of the human is calculated.

In the display section, the daily salt intake of the human calculated by the arithmetic section is, for example,
It is displayed by a liquid crystal or the like.

The apparatus for measuring the amount of salt intake according to the third aspect of the present invention comprises a sensor unit, a calculation unit, and a display unit. In the above-mentioned sensor part, the salt concentration in urine which is excreted by a human in the early morning is measured by the same means as in the present invention 2. Furthermore, in the present invention 3, the urine volume of the first urine in the morning is measured by the sensor unit together with the salt concentration. The measurement of urine volume can be performed by providing a well-known electronic measuring means in the sensor unit.

The arithmetic unit first calculates the salt amount in urine in the early morning by multiplying the urine amount by the salt concentration in urine measured by the sensor unit. Next, the amount of salt in urine in the early morning is substituted into, for example, the regression equation I to calculate the amount of salt excreted by humans in one day. Furthermore, by correcting the amount of salt excreted by the human in a day as needed, the daily salt intake of the human is calculated.

In the display section, the daily salt intake of the human calculated by the arithmetic section is, for example,
It is displayed by a liquid crystal or the like.

(Action) In the method and apparatus for measuring salt intake according to the present invention, a urine sample used as a basis for calculating salt intake is limited to urine only in the early morning. Since the amount of salt in urine in the early morning has an extremely high correlation with the amount of salt excreted daily, the amount of daily salt intake calculated according to the present invention is very similar to the amount of daily salt actually consumed. are doing.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the apparatus for measuring salt intake according to the present invention will be described below with reference to the drawings. However, the present invention is not limited to only this embodiment.

FIG. 1 shows an embodiment of the apparatus for measuring a salt intake according to the present invention. The main unit 1 of the simple salt intake measurement device is provided with a sensor unit 2, a display unit 3, an input unit 4, and a start button 5, and the main unit 1 includes a calculation unit.

First, the subject first collects urine in a cup with a measurement scale in the early morning, and inputs the amount of urine read from the scale through the input unit 4. Next, the sensor unit 2 is immersed in urine placed in a cup, and the start button 5 is pressed. The sensor unit 2 is equipped with a sodium selection electrode, and measures the urinary salt concentration.

From the urine volume input from the input unit 4 and the urinary salt concentration measured by the sensor unit 2, the arithmetic unit calculates the first urinary salt content in the early morning and further stores the following regression The daily excreted salt content is calculated from the formula II. This daily excreted salt content is digitally displayed on the display unit 3 as the subject's daily salt intake. [Daily Excreted Salt / g] = 2.4 × [Early Morning First Urine Salt / g] +3.8 ... II

[0034]

The salt intake measuring method and the salt intake measuring apparatus of the present invention have the above-mentioned configuration, and therefore can accurately and simply measure the daily human salt intake.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing one embodiment of a device for measuring a salt intake according to the present invention.

[Explanation of symbols]

 1 body 2 sensor section 3 display section 4 input section 5 start button

Claims (4)

[Claims] Claims: 1. The amount of salt in urine which is excreted early in the morning is measured by humans, and the correlation between the amount of salt in urine which is excreted early in the morning and the amount of salt excreted by humans in one day is determined by humans in one day. A method for measuring the amount of salt intake, comprising: determining the amount of salt excreted; and calculating the daily salt intake of the human based on the amount of salt excreted by the human in a day. 2. A measuring device for measuring the daily salt intake of a human, wherein the sensor is for measuring the salt concentration in the urine of the first morning excreted by the human, and the urine volume of the first urine in the early morning. An input unit for inputting, the multiplied by the measured urinary salt concentration and the input urine volume to calculate the amount of salt in the first urine in the early morning, and the salt amount in the first urine in the early morning stored in advance. Calculation of the amount of salt excreted by humans in a day from the correlation between the amount and the amount of salt excreted by humans in a day And a display unit for displaying the calculated daily salt intake. 3. A measuring device for measuring a daily salt intake of a human, wherein a sensor unit for measuring a salt concentration and a urine volume in urine in the early morning excreted by the human, Multiply the urinary salt concentration by the urine amount to calculate the amount of salt in the first urine in the early morning, and the correlation between the amount of salt in the first urine in the early morning and the amount of salt excreted by a human in a day is stored in advance. A computing unit that calculates the amount of salt excreted by a human in a day, and calculates the daily salt intake of a human from the amount of salt excreted by the human in a day,
And a display unit for displaying the calculated daily salt intake. 4. The apparatus for measuring salt intake according to claim 2, wherein the sensor for measuring the salt concentration in urine is constituted by a sodium selective electrode. Quantity measuring device.