Tanita has developed a simplified version of BIA that uses leg-to-leg bioimpedance analysis. In this system, two footpad electrodes (pressure contact) are incorporated into the platform of a precision electronic scale. A person's measurements are taken while in a standing position with the electrodes in contact with bare feet.
The body fat monitor/analyzer automatically measures weight and then impedance. Computer software (a microprocessor) imbedded in the product uses the measured impedance, the subject's gender, height, fitness level, and in some cases age, (which have been preprogrammed), and the weight to determine body fat percentage based on equation formulas.
Tanita's reference method is DEXA. Through multiple regression analysis, Tanita has derived standard formulas to determine body fat percentage. Tanita's equations are generalized for standard adults, athletes, and children.
The Tanita method has all the advantages of traditional BIA as well as greater ease of use, speed, and portability.
Professional versions of the products ca be found in hospitals, health clubs, and research labs and include computer printouts of comprehensive data such as BMI, fat percent, fat weight, total body water, fat-free mass, and BMR. The concept has been adapted for use as an affordable home monitoring device. Now ordinary people along with fitness enthusiasts and patients with health risks can measure body fat as part of a regular healthy lifestyle. The same variables apply with regard to hydration levels, and measuring should be done under consistent conditions.
Many people desire a "rating system" for assessing their current level of body fat.
The following table provides a meaningful rating system.
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