Tanita Corporation

Takashi Shiokawa

Yasuhiro Kasahara

Kenji Nishibayashi

Disclosed is a device for measuring body fat of an animal. Embodiments include an input unit for entering individual information of the animal, a bioelectric impedance input unit for measuring the bioelectric impedance of the animal, and a morphological measurement value input unit for entering morphological measurement values for the girth and length of the body of the animal. An impedance-based calculation unit calculates a body fat rate based on the bioelectric impedance, and a morphological measurement value-based calculation unit calculates the body fat rate based on the morphological measurement values. A calculation switching unit checks to determine whether the resulting bioelectric impedance is proper, and automatically switches between the impedance-based calculation unit and the morphological measurement value-based calculation unit depending on the result of the determination.

Body fat measuring device

An activity-induced energy expenditure estimating instrument is provided which is capable of estimating an activity-induced energy expenditure with ease and high accuracy. The activity-induced energy expenditure estimating instrument comprises: body activity information measuring means, body specifying information acquiring means, body composition information acquiring means, and activity-induced energy expenditure computing means, wherein the body activity information measuring means measures body activity information, the body specifying information acquiring means acquires body specifying information, the body composition information acquiring means acquires body composition information, and the activity-induced energy expenditure computing means calculates an activity-induced energy expenditure corresponding to these body activity information, body specifying information and body composition information, by use of correlation data representing correlations between the body activity information, body specifying information and body composition information and an activity-induced energy expenditure.

Activity-induced energy expenditure estimating instrument

The impedance of intracellular water (Z), height (H), weight (W), and age (A) of the subject are included as variables in an equation that estimates muscle mass (MM). Impedance of extracellular water (Z) is determined by a step of applying an alternating current to the body and measuring the resulting impedance. Impedance of total body water (Z) is determined by a step of applying a high frequency alternating current to the body and measuring the resulting impedance. Zis determined by calculating an inverse of the result of subtracting an inverse of measured Zfrom an inverse of measured Z. The equation for muscle mass is of the form: MM&#x2212;aH/Z+bW+cA+d.

Method and apparatus for estimation of muscle mass

An object of the present invention is to provide a body composition measuring device used in arithmetically deriving an index indicative of body composition in accordance with the bioelectric impedance measuring method, in which a highly accurate calculation result can be obtained with the reduced effect from the fluctuation in a day while using a simple measuring method. Provided is a body composition measuring device in which the bioelectric impedance value is measured at each different frequency by applying the current at a plurality of different frequencies, for example, at a first frequency and a second frequency, to the living body, while concurrently correcting the measured bioelectric impedance value at the first frequency or at the second frequency by using the difference in the bioelectric impedance values between the first and the second frequencies to calculate the index indicative of the body composition based on the corrected bioelectric impedance value, or while concurrently calculating the index indicative of the body composition based on either one of the measured bioelectric impedance values at the first frequency or at the second frequency and then correcting the calculated index indicative of the body composition by using the difference between the bioelectric impedance values at the first and the second frequencies.

Body composition measuring device

Disclosed is an animal health care system, comprising: a weight input unit; an impedance measurement unit; an inter-leg distance input unit; and a health assessment data calculation unit. According to the present invention said weight input unit enters weight value of an animal, and said impedance measurement unit includes impedance measurement electrodes each for contacting with a root of each leg of the animal and measures impedance between front and rear legs of the animal. Furthermore, said inter-leg distance input unit enters the distance between the roots of front and rear legs of the animal, and said health assessment data calculation unit calculates health assessment data, based on the weight value of the animal, the impedance between front and rear legs of the animal, and the distance between the roots of front and rear legs of the animal.

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Tokyo, Japan

Takashi Shiokawa