Cited by 206Nutrition and Health in AgingMuscle metabolism and nutritionMuscle Physiology and Disorders

Protein intake and muscle function in older adults

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Deer, Rachel R., Volpi, Elena·2015·Current Opinion in Clinical Nutrition and Metabolic Care

Abstract

PURPOSE OF REVIEW: We provide an update on the recent advances in nutrition research regarding the role of protein intake in the development and treatment of sarcopenia of aging. RECENT FINDINGS: Specific muscle mass, strength and function cut-points for the diagnosis of sarcopenia have been identified. There is mounting evidence, as highlighted by multiple consensus statements, that the Recommended Dietary Allowance (0.8 g/kg body weight) may be inadequate to promote optimal health in older adults. Recent research indicates that in addition to total daily protein intake the timing of protein intake is also important to best stimulate muscle protein synthesis, and maintain muscle mass and function in older adults. SUMMARY: Recent evidence suggests that the Recommended Dietary Allowance for protein is inadequate, and that the timing and distribution of protein consumption throughout daily meals may be as important as the total quantity. Research has continued to advance our understanding of protein's effects on muscle metabolism; however, there remains a need for large, long-term, randomized clinical trials examining whether the positive effects of dietary protein on muscle metabolism seen in acute studies will translate over the long term into gains of muscle mass, function, and the overall health of older adults.

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  • Adequate protein intake is of fundamental importance because a negative protein balance leads to atrophy of skeletal muscles, reduced muscle growth, and a decline in functional status.

    “For this reason, adequate protein intake is of fundamental importance as a negative protein balance leads to atrophy of the skeletal muscles, reduced muscle growth, and a decline in functional status [48].”
  • In addition to consuming the recommended amount of protein (1.2 g/kg body weight/day), the distribution of dietary protein throughout the day is important in older adults.

    “In addition to consuming the recommended amount of protein (1.2 g/kg body weight/day), the distribution of dietary protein throughout the day is important in older adults [48].”

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Authors
Deer, R. R., & Volpi, E.
Affiliations
The University of Texas Medical Branch at Galveston (US)
Corresponding author
Volpi, Elena
Venue
Current Opinion in Clinical Nutrition and Metabolic Care
Published
2015-05
Volume
18
Issue
3
Pages
248-253
ISSN
1363-1950 (ISSN-L)
OpenAlex
W2009987429
Cited by
206
References
48
Citations by year
2026: 9 · 2025: 11 · 2024: 28 · 2023: 20 · 2022: 29 · 2021: 27 · 2020: 26 · 2019: 21 · 2018: 18 · 2017: 8 · 2016: 9
FWCI
1.43
Type
journal article
Language
en
Open access
Locations
  • Current Opinion in Clinical Nutrition & Metabolic Care (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Aging (R01AG030070, P30AG024832)
Topics
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
protein intake, sarcopenia, older adults, muscle function, muscle mass, muscle strength, muscle protein synthesis, protein distribution, RDA
MeSH terms
Aged, Aging, Body Composition, Diet, Dietary Proteins, Humans, Muscle Proteins, Nutritional Requirements, Muscle, Skeletal, Sarcopenia

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