Cited by 125Muscle Physiology and DisordersNutrition and Health in AgingGenetics, Aging, and Longevity in Model Organisms

Skeletal muscle function and hypertrophy are diminished in old age

Degens, Hans, Alway, Stephen E.·2003·Muscle & Nerve

Abstract

Muscle loss occurs during aging. To investigate whether the hypertrophic response is attenuated at old age, we used male Fischer 344 (26 months old; n = 5) and Fischer 344 x Brown Norway rats (6, 9, and 33 months old; n = 8, 10, and 6, respectively). Hypertrophy of the left plantaris muscle was induced by surgical denervation of its agonists. The right leg served as control. The mass and maximal tetanic force (P 0) of control muscles declined by ∼30% between 9 and 26 months (P < 0.05). Fatigue resistance during intermittent isometric contractions was reduced by ∼60% at 33 months. At 33 months, the attenuated hypertrophy was accompanied by a decrease rather than an increase in P 0. Yet, hypertrophy was accompanied by a 25% rise in fatigue resistance at all ages (P = 0.001). Thus, aging is associated with a decline in muscle mass and function. In addition, at advanced age, the hypertrophic response is reduced and a hypertrophic stimulus even aggravates the age‐associated muscle weakening. Muscle Nerve 27: 339–347, 2003

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Crossref · 10.1002/mus.10314

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Authors
Degens, H., & Alway, S. E.
Affiliations
  • Radboud University Nijmegen (NL)
  • West Virginia University (US)
Corresponding author
Degens, Hans
Venue
Muscle & Nerve
Publisher
Wiley
Published
2003-02-20
Volume
27
Issue
3
Pages
339-347
ISSN
  • 0148-639X (ISSN-L)
  • 1097-4598
OpenAlex
W2089950181
Cited by
125
References
30
Citations by year
2026: 4 · 2025: 2 · 2023: 5 · 2021: 5 · 2020: 5 · 2019: 4 · 2018: 7 · 2017: 4 · 2016: 2 · 2015: 8 · 2014: 5 · 2013: 3 · 2012: 2
FWCI
3.22
Type
journal article
Language
en
Open access
closed
Locations
  • Muscle & Nerve (publishedVersion)
  • PubMed (publishedVersion)
  • e-space (Manchester Metropolitan University) (submittedVersion)
  • Radboud Repository (Radboud University) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
skeletal muscle aging, muscle atrophy, muscle hypertrophy, denervation-induced muscle atrophy, plantaris muscle, muscle fatigue resistance, muscle mass, age-related muscle weakness, F344 rats, Brown Norway rats
MeSH terms
Aging, Animals, Body Weight, Hypertrophy, Male, Muscle Contraction, Organ Size, Rats, Inbred BN, Rats, Inbred F344, Muscle, Skeletal, Muscle Fatigue, Muscle Weakness, Myosin Heavy Chains, Rats

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