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Cited by 410

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

Injury to skeletal muscle fibers of mice following lengthening contractions

McCully, K. K., Faulkner, J. A.·1985·Journal of Applied Physiology
DOI 10.1152/jappl.1985.59.1.119
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Abstract

We tested the hypothesis that lengthening contractions result in greater injury to skeletal muscle fibers than isometric or shortening contractions. Mice were anesthetized with pentobarbital sodium and secured to a platform maintained at 37 degrees C. The distal tendon of the extensor digitorum longus muscle was attached to a servomotor. A protocol consisting of isometric, shortening, or lengthening contractions was performed. After the contraction protocol the distal tendon was reattached, incisions were closed, and the mice were allowed to recover. The muscles were removed after 1–30 days, and maximum isometric force (Po) was measured in vitro at 37 degrees C. Three days after isometric and shortening contractions and sham operations, histological appearance was not different from control and Po was 80% of the control value. Three days after lengthening contractions, histological sections showed that 37 +/- 4% of muscle fibers degenerated and Po was 22 +/- 3% of the control value. Muscle regeneration, first seen at 4 days, was nearly complete by 30 days, when Po was 84 +/- 3% of the control value. We conclude that, with the protocol used, lengthening, but not isometric or shortening contractions, caused significant injury to muscle fibers.

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Metadata

Authors
McCully, K. K., & Faulkner, J. A.
Venue
Journal of Applied Physiology
Publisher
American Physiological Society
Published
1985-07-01
Volume
59
Issue
1
Pages
119-126
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
DOI
10.1152/jappl.1985.59.1.119
OpenAlex
W2292568679
Cited by
410
References
2
FWCI
2.19
Type
journal article
Language
en
Open access
closed

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