Document Detail


Short-term changes in the series elastic component after an acute eccentric exercise of the elbow flexors.
MedLine Citation:
PMID:  11482553     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have studied the effect of a unique eccentric exercise session on the series elastic component (SEC) properties of human elbow flexors. Ten active females performed five sets of ten maximal eccentric contractions on an isokinetic ergometer. Maximal isometric (MVC) torque, and the corresponding myoelectrical activity (RMS) of the biceps brachii and the triceps brachii muscles were recorded before, immediately after, 48 h after, and 1 week after the exercise session. SEC compliance was also measured, using the in situ quick-release technique. Maximal eccentric torque declined significantly among the five sets of the exercise session (P < 0.01). The exercise session induced a significant decrease of the MVC over the post-exercise 48-h period. MVC returned to its control value 1 week after the exercise session. The neuromuscular efficiency calculated from the MVC torque:RMS ratio did not change throughout the experimental period, suggesting an optimisation of the neural drive to muscle force production capacity. The compliance values increased when force values decreased, but the slope of the relationship between both compliance and force logarithmic values was not significantly modified by the experimental procedure, indicating that the intrinsic properties of the SEC were not affected by the eccentric exercise session. The contractility-elasticity coupling was also maintained at a constant level during the recovery period. In other words, after an acute eccentric exercise, the evolution of SEC compliance was closely linked to force changes.
Authors:
A Michaut; M Pousson; Y Ballay; J Van Hoecke
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European journal of applied physiology     Volume:  84     ISSN:  1439-6319     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-08-02     Completed Date:  2001-12-12     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  569-74     Citation Subset:  IM    
Affiliation:
Groupe Analyse du Mouvement, UFR STAPS, Université de Bourgogne, Dijon, France, anne.michaut@u-borugogne.fr
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MeSH Terms
Descriptor/Qualifier:
Adult
Elasticity
Elbow Joint / physiology*
Electromyography
Exercise / physiology*
Female
Humans
Isometric Contraction / physiology*
Torque

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