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Cited by 115

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Dietary protein requirements and body protein metabolism in endurance-trained men

Meredith, C. N., Zackin, M. J., Frontera, W. R., Evans, W. J.·1989·Journal of Applied Physiology
DOI 10.1152/jappl.1989.66.6.2850
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Abstract

The effects of regular submaximal exercise on dietary protein requirements, whole body protein turnover, and urinary 3-methylhistidine were determined in six young (26.8 +/- 1.2 yr) and six middle-aged (52.0 +/- 1.9 yr) endurance-trained men. They consumed 0.6, 0.9, or 1.2 g.kg-1.day-1 of high-quality protein over three separate 10-day periods, while maintaining training and constant body weight. Nitrogen measurements in diet, urine, and stool and estimated sweat and miscellaneous nitrogen losses showed that they were all in negative nitrogen balance at a protein intake of 0.6 g.kg-1.day-1. The estimated protein requirement was 0.94 +/- 0.05 g.kg-1.day-1 for the 12 men, with no effect of age. Whole body protein turnover, using [15N]glycine as a tracer, and 3-methylhistidine excretion were not different in the two groups, despite lower physical activity of the middle-aged men. Protein intake affected whole body protein flux and synthesis but not 3-methylhistidine excretion. These data show that habitual endurance exercise was associated with dietary protein needs greater than the current Recommended Dietary Allowance of 0.8 g.kg-1.day-1. However, whole body protein turnover and 3-methylhistidine excretion were not different from values reported for sedentary men.

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Metadata

Authors
Meredith, C. N., Zackin, M. J., Frontera, W. R., & Evans, W. J.
Venue
Journal of Applied Physiology
Publisher
American Physiological Society
Published
1989-06-01
Volume
66
Issue
6
Pages
2850-2856
ISSN
  • 8750-7587
  • 1522-1601
DOI
10.1152/jappl.1989.66.6.2850
Cited by
115
References
1
Language
en

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