Cited by 89Muscle Physiology and DisordersExercise and Physiological ResponsesCardiovascular and exercise physiology

Prolonged recovery and reduced adaptation in aged rat muscle following eccentric exercise

McBride, Todd A., Gorin, Fredric A., Carlsen, Richard C.·1995·Mechanisms of Ageing and Development

Abstract

We tested the hypothesis that exposure to eccentric (lengthening) contractions results in greater damage and more prolonged recovery in aged rat muscle (32 months) than in adult muscle (6 months), and that the adaptation usually associated with a single exposure to eccentric exercise is reduced in the aged muscle. Experiments were performed using a new rat model for aging studies. Fisher 344/Brown Norway F1 Hybrid. An ankle flexor, the tibialis anterior (TA), was subjected to a series of 24 eccentric contractions in situ and contractile function was assessed 1, 2, 5 and 14 days following. Eccentric exercise produced a similar reduction in maximum specific twitch and tetanic tension in the aged and adult muscles at 1 and 2 days postexercise. Adult muscles recovered by 5 days, while aged TA remained significantly impaired. Aged TA was fully restored by 14 days. Exercise adaptation was tested by subjecting the TA to a second exercise 14 days following the first. Contractile function was determined 2 days following the second exercise. Adult TA maintained its pre-exercise specific force following the second exercise, while aged TA again showed a significant reduction. Thus, a single exposure to eccentric exercise produced complete adaptation in the adult TA, but not in the aged muscles.

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Crossref · 10.1016/0047-6374(95)01629-e

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Authors
McBride, T. A., Gorin, F. A., & Carlsen, R. C.
Affiliations
University of California, Davis (US)
Corresponding author
McBride, Todd A.
Venue
Mechanisms of Ageing and Development
Publisher
Elsevier BV
Published
1995-09
Volume
83
Issue
3
Pages
185-200
ISSN
0047-6374 (ISSN-L)
OpenAlex
W1972939655
Cited by
89
References
29
Citations by year
2026: 1 · 2025: 4 · 2024: 6 · 2022: 2 · 2021: 3 · 2019: 1 · 2018: 1 · 2017: 1 · 2016: 3 · 2014: 1 · 2013: 3 · 2012: 3
FWCI
0.25
Type
journal article
Language
en
Open access
closed
Locations
  • Mechanisms of Ageing and Development (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute on Aging (AG00429)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
aging, eccentric exercise, skeletal muscle, tibialis anterior, post-exercise recovery, exercise adaptation, muscle damage, contractile function, specific force
MeSH terms
Adaptation, Physiological, Aging, Animals, Female, Muscle Contraction, Physical Conditioning, Animal, Rats, Inbred BN, Rats, Inbred F344, Muscle, Skeletal, Rats

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