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How Does a Tanita Scale Work?

by
author image Jessica Bell
Jessica Bell has been working in the health and fitness industry since 2002. She has served as a personal trainer and group fitness instructor. Bell holds an M.A. in communications and a B.A. in English.
How Does a Tanita Scale Work?
Woman's feet on a scale Photo Credit DonnaSuddes/iStock/Getty Images

Bioelectrical impedence analysis is the method that Tanita scales utilize to measure body fat. These devices work by measuring the resistance of a small, water-conducted electrical signal that is sent through the body. The more muscle mass an individual has, the more water their body holds and the easier the signal is conducted. If a person has more fat, the signal will face greater resistance and the calculation of body fat percentage will be higher.

Tanita Scales

Together with bioelectrical impedence analysis, Tanita scales consider an individual's height, weight, age and gender to estimate body composition. Tanita scales look like regular bathroom scales, but electrodes under the scales' metal foot sensors send a gentle electrical signal through the body to measure body fat. Tanita was the first company on the market to introduce body fat scales using this patented technology.

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