Nutrition
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CLASSICS IN OBESITY
THE SPECIFIC GRAVITY OF HEALTHY MEN
BODY WEIGHT + VOLUME AS AN INDEX OF OBESITY
A. R. Behnke, JK,M.D.
Lieutenant Commander, M. C., U.S. Navy
B. G. Feen, M.D.
Lieutenant, M.C., U.S. Navy
AND
W C. Welham, M.D.
Lieutenant, M.C., U.S. Navy
The fundamental biologic determination of corporeal specific gravity, essentially a relationship between weight and unit volume, has been neglected in the modem classification of healthy persons. Stern (1) and Spivak (2) emphasized the value of the measurement of corporeal density, but their experimental data are not conclusive. Of especial interest is the relationship between gravity and the fat content of the body. The presence of an indeterminate amount of excess adipose tissue renders difficult any precise computation, for example, of metabolic rate or dosage of drugs in terms of total body weight. The important consideration should be the weight of the lean body representing the active mass of protoplasm. In this paper the data support the concept that the comparatively low specific gravity of fat makes the measurement of the specific gravity of the body mass valid for the estimation of fat content. The comprehensive, statistical analysis of Boyd (3), however, covering seven hundred and eighty-seven values reported since 1906 does not permit a classification of individuals with respect to obesity. The analyzed results (3). moreover, obtained by different investigators
Behnke AR, Feen BG, Welham WC. The specific gravity of healthy men. JAMA. 1942;118:495-498. Copyright 81942. American Medical Association. Reprinted with permission from the American Medical Association,515 N. State St., Chicago, IL 64610. Special thanks to Judy Roberts of the Pennington Information Center for help in acquiring this and reference documents.
elude comparison by reason of the unknown quantity of air present in the !ungs when the measurements were made. In tile present investigation the values of specific...
THE SPECIFIC GRAVITY OF HEALTHY MEN
BODY WEIGHT + VOLUME AS AN INDEX OF OBESITY
A. R. Behnke, JK,M.D.
Lieutenant Commander, M. C., U.S. Navy
B. G. Feen, M.D.
Lieutenant, M.C., U.S. Navy
AND
W C. Welham, M.D.
Lieutenant, M.C., U.S. Navy
The fundamental biologic determination of corporeal specific gravity, essentially a relationship between weight and unit volume, has been neglected in the modem classification of healthy persons. Stern (1) and Spivak (2) emphasized the value of the measurement of corporeal density, but their experimental data are not conclusive. Of especial interest is the relationship between gravity and the fat content of the body. The presence of an indeterminate amount of excess adipose tissue renders difficult any precise computation, for example, of metabolic rate or dosage of drugs in terms of total body weight. The important consideration should be the weight of the lean body representing the active mass of protoplasm. In this paper the data support the concept that the comparatively low specific gravity of fat makes the measurement of the specific gravity of the body mass valid for the estimation of fat content. The comprehensive, statistical analysis of Boyd (3), however, covering seven hundred and eighty-seven values reported since 1906 does not permit a classification of individuals with respect to obesity. The analyzed results (3). moreover, obtained by different investigators
Behnke AR, Feen BG, Welham WC. The specific gravity of healthy men. JAMA. 1942;118:495-498. Copyright 81942. American Medical Association. Reprinted with permission from the American Medical Association,515 N. State St., Chicago, IL 64610. Special thanks to Judy Roberts of the Pennington Information Center for help in acquiring this and reference documents.
elude comparison by reason of the unknown quantity of air present in the !ungs when the measurements were made. In tile present investigation the values of specific...