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American Journal of Clinical Nutrition, Vol 38, 223-228, Copyright © 1983 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Nutrition, protein turnover, and physical activity in young women

TP Stein, MD Schluter and CE Diamond

The whole body protein synthesis rate was measured in four groups of young women by giving a single pulse of 15N glycine and determining the 15N enrichment in the urinary ammonia excreted over the next 10 h. The groups were: Ia, normals, with normal dietary intake; Ib, competition swimmers, normal intake; IIa, normal activity but low intake; and IIb, high physical activity, low intake. The results indicated that the protein synthesis rate was lower in the two low intake groups. It did not correlate with a program of vigorous physical activity, while physical activity, but not nutritional status or the protein synthesis rate correlated with menstrual cycle irregularities.




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Copyright © 1983 by The American Society for Nutrition