BODY COMPOSITION OF A MILITARY POPULATION FT. CARSON 1963. I. BODY DENSITY, FAT, AND POTASSIUM 40.
ARMY MEDICAL RESEARCH AND NUTRITION LAB DENVER COLO
Pagination or Media Count:
Body volumes were measured on 97 soldiers between the ages of 17 - 52 years by water displacement volumetry and corrected for respiratory gas by a nitrogen washout technique. Total body potassium 40 was measured by a NaI crystal low level gamma radiation counter. The subjects were grouped into 5 year age increments and compositional changes were noted to occur in per cent body fat and quantity of body potassium present. Body density decreased with age reflecting an increase in body fat. Total body potassium decreased with age. Both parameters varied independent of body weight and appear age dependent. Eight additional obese subjects were found to have the lowest body density and total body potassium values gm Kkg body weight. Effective ranking of body fat burden of populations was demonstrated by body volumetry and age differences were noted from potassium 40 counting. A correlation coefficient of r 0.731 was demonstrated between body density and body potassium gm Kkg body weight. Author
- Anatomy and Physiology