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ERIC Number: EJ816835
Record Type: Journal
Publication Date: 2007-Dec
Pages: 12
Abstractor: As Provided
Reference Count: 19
ISSN: ISSN-0146-3934
Body Fat and Muscle Mass as Functions of Body Water
Sutton, R. A.; Miller, Carolyn
College Student Journal, v41 n4 p1102-1113 Dec 2007
Hydrostatic weighing and chemical dilution are well accepted methods for measuring body composition. Recently, Dual Energy X-ray Absorptiometry (DEXA) has become the preferred method. The two compartment algorithms used by these methods assume a fixed constant for lean body tissue. This constant has long been suspect of variations due to many reasons such as ethnic or racial differences, age, health, etc. Variations in muscle mass, however, are factors that affect every single subject. The study presented here includes muscle mass as one compartment of a three compartment body composition model. Each compartment is modeled as a function of body water measurements with hydrometric constants as parameters. A muscle mass algorithm is hypothesized and tested to support the authors' contention that muscle mass can be approximated by making body water measurements. It is demonstrated that, when muscle mass becomes a factor, the traditional two compartment models can overstate body fat ratios by as much as four percent. (Contains 2 tables and 3 figures.)
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A