No evidence of expertise-related changes in muscle synergies during rowing

Turpin, Nicolas A., Guevel, Arnaud, Durand, Sylvain and Hug, Francois (2011) No evidence of expertise-related changes in muscle synergies during rowing. Journal of Electromyography and Kinesiology, 21 6: 1030-1040. doi:10.1016/j.jelekin.2011.07.013

Author Turpin, Nicolas A.
Guevel, Arnaud
Durand, Sylvain
Hug, Francois
Title No evidence of expertise-related changes in muscle synergies during rowing
Journal name Journal of Electromyography and Kinesiology   Check publisher's open access policy
ISSN 1050-6411
Publication date 2011-12
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.jelekin.2011.07.013
Volume 21
Issue 6
Start page 1030
End page 1040
Total pages 11
Place of publication London, United Kingdom
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
The purpose of the present study was to determine whether expertise in rowing is driven by a specific structure in muscular coordination. We compared seven experienced rowers and eight untrained (i.e., inexperienced) subjects during rowing on an ergometer. Both surface electromyography activity and mechanical patterns (forces exerted at the handle and the foot-stretcher) were recorded during a high intensity rowing exercise. A non-negative matrix factorization was applied to 23 electromyographic patterns to differentiate muscle synergies. Results showed that expertise was not associated with different dimensionality in the electromyographic data and that three muscle synergies were sufficient to explain the majority of the variance accounted for (i.e., >90% of the total variance) in the two populations. The synergies extracted were similar in the two populations, with identical functional roles. While the temporal organization of the propulsive synergies was very similar, slight differences were found in the composition of the muscle synergies (muscle synergy vectors) between the two populations. The results suggests that rowing expertise would not require the development of novel muscle synergies but would imply intrinsic synergies already used in different behaviors. Performance in rowing is more probably linked to adjustments in the mechanical output of the muscle synergies rather than to differences in the shape and timing of their activations
Keyword Electromyography
Muscle coordination
Motor modules
Isometric Torque Production
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Health and Rehabilitation Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 15 times in Scopus Article | Citations
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Created: Wed, 28 Aug 2013, 16:21:21 EST by Francois Hug on behalf of School of Health & Rehabilitation Sciences