Tanita Corporation

Other

Steven B Heymsfield

Miyuki Kodama

Hitoshi Sato

Michael Jack Sinclair

Yoshinori Fukuda

Tamotsu Iwabuchi

Kazuhiko Sakata

A method and a system for estimating visceral fat area (VFA) of a subject uses the product of the Xth power of a height value (Ht) and the Yth power of a fat mass value (FM), through a parameter expressed as FM/Htor Ht/FM, or by using an equation expressed as VFA=C*FM/Ht+C*Age+C, where each of X and Y are a number other than zero. The method and the system decrease estimation errors due to height, thereby enabling common use by a number of nations each having a different average height, and decreasing cost of development and manufacturing.

Method and system for estimating visceral fat area

Basal metabolism is determined by obtaining an age of a subject; determining fat-free mass of the subject; and calculating the basal metabolism of the subject using the determined fat-free mass and a reciprocal of the age. The basal metabolism can be calculated using the formula represented by BMR&equals;A&times;FFM&plus;B&times;(1/age)&plus;C, in which BMR is basal metabolism (kcal/day), FFM is fat-free mass (kg), and A, B, and C are constants.

Method for determining basal metabolism

An apparatus for measuring basal metabolism includes a device to input individual data, for example an age of a subject; a device to measure bioelectrical impedance of the subject; a device for calculation of fat-free mass on the basis of the individual data and the impedance;, and a device for calculation of basal metabolism of the subject on the basis of a reciprocal of the age and the fat-free mass. The basal metabolism can be calculated using the formula represented by BMR&equals;A&times;FFM&plus;B&times;(1/age)&plus;C, in which BMR is basal metabolism (kcal/day), FFM is fat-free mass (kg), and A, B, and C are constants.

Apparatus for measuring basal metabolism

The body fat percentage for a person is estimated from the BMI of the person by employing a multiple regression analysis using the reciprocal of the BMI (1/BMI) as the independent variable. In other embodiments, potentially independent and easily obtained variables such as age, sex, and ethnicity are also used in conjunction to provide precise estimates of the body fat percentage. Devices for estimating the body fat percentage can be implemented as calculators, smart scales, and Internet web sites.

Method and apparatus for estimating body fat

High frequency current application electrodes are brought into contact with both hands, both feet, etc., which are extreme parts of a body in order to apply current to the parts of the body to be measured. Potential difference measuring electrodes are brought into contact with the parts to be measured along the path of the high frequency current. High frequency current application electrodes and potential difference measuring electrodes are selected to select the path of the high frequency current and the path of the potential difference measurement in accordance with the purpose. Impedance on each of the parts of the body is measured and body composition is derived.

Living body impedance measuring instrument and body composition measuring instrument

A measuring device for measuring the value represented by an indication on a graph, chart, map, or the like, having a calibration scale. The measuring device can accommodate any calibration scale over a wide range. The measuring device includes a first member, having a first reference indication on it, and a second member, having a second reference indication on it. The second member is movable with respect to the first member between a closed position, in which the two reference indications are adjacent each other, and an extended position, in which the two reference indications are separated. A first voltage signal, indicative of the separation of the first and second members, is applied to a ratiometric digital voltmeter which also receives as an input a second voltage signal determined by the setting of a manually adjustable control. The ratiometric digital voltmeter provides an output signal that is indicative of the ratio of its two input voltages, and this output is indicated on a digital display unit. In use, the two reference indications are placed at the two ends of the calibration scale indication of the graph, chart, map, or other such paper, to apply to the ratiometric digital voltmeter a first voltage signal indicative of that calibration scale indication, and the manually adjustable control is adjusted until the calibration value represented by that calibration scale indication is shown on the digital display unit. The two reference indications are then placed at the two ends of the indication to be measured, and the ratiometric voltmeter output, shown on the digital display unit, then represents that measured value.

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Mount Kisco, NY, United States of America

Steven B Heymsfield