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PART II. BODY COMPOSITION OF THE MALE REFERENCE ADOLESCENT
Publication year - 1983
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.1983.tb09872.x
Subject(s) - body water , potassium , medicine , growth spurt , zoology , composition (language) , hydrostatic weighing , body weight , endocrinology , biology , chemistry , linguistics , philosophy , organic chemistry
Utilizing available data for total body water, total body potassium and total body calcium, fat and fat‐free body mass (FFBM) of the reference male adolescent between 10.5 and 18.5 years has been estimated. FFBM was conceptualized to consist of water, protein, carbohydrate, osseous and nonosseous minerals. With increasing age, water concentration of FFBM decreases, protein concentration increases slightly and concentration of osseous minerals increases substantially. The combined effect of these changes is that density of FFBM increases with age. Osseous minerals increase mainly during the adolescent growth spurt. With the age and sex‐specific FFBM: total body water ratios and densities of FFBM presented it will be possible to avoid systematic underestimation of fat content from measurements of total body water and overestimation of fat content from determinations of body density by underwater weighing.