Journal article
Neuromuscular fatigue of elbow flexor muscles of dominant and non-dominant arms in healthy humans
Journal of electromyography and kinesiology, Vol.12(4), pp.287-294
08/2002
DOI: 10.1016/S1050-6411(02)00024-X
PMID: 12121685
Abstract
The purpose of this study was to assess differences in fatigue-related changes in variables related to structures within the neuromuscular system, between the dominant and non-dominant elbow flexor muscles of right-handed individuals. Two experimental sessions were performed on the right arm and one on the left arm. For each session, maximum voluntary torque, level of voluntary activation, M-wave amplitude, twitch/train or twitch/doublet torque ratio and EMG median frequency were obtained before and up to 20 min after a sustained maximum isometric fatigue task. Our main results were: 1) reproducible fatigue-induced changes in all variables of interest between the two sessions performed with the right arm, 2) significantly greater failure in voluntary activation and neuromuscular propagation with sustained activity for the non-dominant compared with dominant side, and 3) no effect of dominance on MVC torque, endurance time, and fatigue-induced changes in EMG median frequency and elicited torques. These results suggest that the preferential use of elbow flexor muscles with the dominant arm leads to more fatigue resistance in certain structures/mechanisms of the neuromuscular system, but not in others.
Details
- Title: Subtitle
- Neuromuscular fatigue of elbow flexor muscles of dominant and non-dominant arms in healthy humans
- Creators
- D M Williams - Graduate Program in Physical Therapy and Rehabilitation Science, University of Iowa, Iowa City, IA 52242, USAS SharmaM Bilodeau
- Resource Type
- Journal article
- Publication Details
- Journal of electromyography and kinesiology, Vol.12(4), pp.287-294
- Publisher
- England
- DOI
- 10.1016/S1050-6411(02)00024-X
- PMID
- 12121685
- ISSN
- 1050-6411
- eISSN
- 1873-5711
- Language
- English
- Date published
- 08/2002
- Academic Unit
- Physical Therapy and Rehabilitation Science
- Record Identifier
- 9984047994902771
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