Format

Send to

Choose Destination
See comment in PubMed Commons below
J Electromyogr Kinesiol. 2004 Feb;14(1):61-70.

Factors involved in strain-induced injury in skeletal muscles and outcomes of prolonged exposures.

Author information

1
Departments of Physiology and Pharmacology, Robert C Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506-9229, USA. wstauber@hsc.wvu.edu

Abstract

Repetitive motion disorders can involve lengthening of skeletal muscles to perform braking actions to decelerate limbs under load often resulting in muscle strains and injury. Injury is a loss of isometric force (weakness) requiring days to recover. The capacity of skeletal muscle to tolerate repeated strains is dependent on multiple factors including individual variation. The most important factors producing muscle strain injury are the magnitude of the resisting force (peak-stretch force) and the number of strains. Other factors such as muscle length and fiber type contribute to the susceptibility to injury as well, but to a lesser degree. Strain injury can also lead to inflammation and pain. Chronic exposure to repeated strains can result in fibrosis that is not completely reversed after months of rest. Long rest times appear to be the only factor reported to prevent inflammation in rats following repeated strain injury. Further understanding of the mechanism for prevention of histopathologic changes by long rest times should provide a rationale for prevention of negative outcomes.

PMID:
14759751
DOI:
10.1016/j.jelekin.2003.09.010
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center