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Protein turnover and energy metabolism of elderly women fed a low-protein diet.

Publication ,  Journal Article
Castaneda, C; Dolnikowski, GG; Dallal, GE; Evans, WJ; Crim, MC
Published in: Am J Clin Nutr
July 1995

The metabolic mechanisms of accommodation to a low-protein diet in elderly women were studied. Diets containing 1.47 (low) or 2.94 (adequate) g protein.kg body cell mass-1.d-1 (0.45 or 0.92 g.kg body weight-1.d-1, respectively) were fed for 10 wk. Fed state leucine kinetics, fasted and fed metabolic rate, and acute-phase responses to a bout of exercise were measured. Leucine uptake into protein, breakdown, and acute-phase responses were not significantly different within or between diet groups. In the low-protein group, leucine flux and oxidation were lower after 3 wk and oxidation continued to decrease throughout the 10-wk study. When expressed per body cell mass, metabolic rate increased over time in the low-protein group only. Leucine oxidation was a more sensitive index of the adequacy of protein intake than synthesis, flux, metabolic rate, or acute-phase response.

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Published In

Am J Clin Nutr

DOI

ISSN

0002-9165

Publication Date

July 1995

Volume

62

Issue

1

Start / End Page

40 / 48

Location

United States

Related Subject Headings

  • Nutrition & Dietetics
  • Leucine
  • Humans
  • Female
  • Exercise
  • Energy Metabolism
  • Eating
  • Dietary Proteins
  • Diet, Protein-Restricted
  • Aging
 

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Castaneda, C., Dolnikowski, G. G., Dallal, G. E., Evans, W. J., & Crim, M. C. (1995). Protein turnover and energy metabolism of elderly women fed a low-protein diet. Am J Clin Nutr, 62(1), 40–48. https://doi.org/10.1093/ajcn/62.1.40
Castaneda, C., G. G. Dolnikowski, G. E. Dallal, W. J. Evans, and M. C. Crim. “Protein turnover and energy metabolism of elderly women fed a low-protein diet.Am J Clin Nutr 62, no. 1 (July 1995): 40–48. https://doi.org/10.1093/ajcn/62.1.40.
Castaneda C, Dolnikowski GG, Dallal GE, Evans WJ, Crim MC. Protein turnover and energy metabolism of elderly women fed a low-protein diet. Am J Clin Nutr. 1995 Jul;62(1):40–8.
Castaneda, C., et al. “Protein turnover and energy metabolism of elderly women fed a low-protein diet.Am J Clin Nutr, vol. 62, no. 1, July 1995, pp. 40–48. Pubmed, doi:10.1093/ajcn/62.1.40.
Castaneda C, Dolnikowski GG, Dallal GE, Evans WJ, Crim MC. Protein turnover and energy metabolism of elderly women fed a low-protein diet. Am J Clin Nutr. 1995 Jul;62(1):40–48.

Published In

Am J Clin Nutr

DOI

ISSN

0002-9165

Publication Date

July 1995

Volume

62

Issue

1

Start / End Page

40 / 48

Location

United States

Related Subject Headings

  • Nutrition & Dietetics
  • Leucine
  • Humans
  • Female
  • Exercise
  • Energy Metabolism
  • Eating
  • Dietary Proteins
  • Diet, Protein-Restricted
  • Aging