alexa Hydration of fat-free body mass: review and critique of a classic body-composition constant.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Obesity & Weight Loss Therapy

Author(s): Wang Z, Deurenberg P, Wang W, Pietrobelli A, Baumgartner RN,

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Abstract The assumed "constancy" of fat-free body mass hydration is a cornerstone in the body-composition research field. Hydration, the observed ratio of total body water to fat-free body mass, is stable at approximately 0.73 in mammals and this constancy provides a means of estimating total body fat in vivo. This review examines both in vitro and in vivo data that support the hydration constancy hypothesis and provides a critique of applied methodology. Biological topics of interest are then examined and critical areas in need of future research are identified. These are important issues because water dilution is the only method currently available for estimating body fat in all mammals, which range in body mass by a factor of 10(4).
This article was published in Am J Clin Nutr and referenced in Journal of Obesity & Weight Loss Therapy

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