Document Detail


Anticipatory postural adjustments and focal performance during bilateral forward-reach task under different stance conditions.
MedLine Citation:
PMID:  19454777     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study investigated how young healthy subjects control their equilibrium in situations of instability specifically elicited by a reduced capacity of force production in the postural muscle system. Ten subjects displaced a bar forward with both hands at maximal velocity toward a target while standing on the dominant leg (UNID), on the nondominant leg (UNIND), or on both legs. In each stance condition, anticipatory postural adjustments (APAs) were elicited. Along the anteroposterior axis, APAs were two-times longer in UNID and UNIND than in bipedal stance, while the anticipatory inertia forces remained equivalent. The focal performance was maintained without any additive postural perturbation. A small effect of leg dominance could be detected on APAs along the mediolateral axis (i.e., anticipatory inertia forces were higher in UNIND than in UNID). These results stress the adaptability of the central nervous system to the instability specifically elicited by reduced postural muscle system efficiency.
Authors:
Eric Yiou; Malha Mezaour; Serge Le Bozec
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Motor control     Volume:  13     ISSN:  1087-1640     ISO Abbreviation:  Motor Control     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-05-20     Completed Date:  2009-06-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706297     Medline TA:  Motor Control     Country:  United States    
Other Details:
Languages:  eng     Pagination:  142-60     Citation Subset:  IM    
Affiliation:
Laboratory of Motor Control and Perception, Faculty of Sport Sciences, University of Paris, France.
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MeSH Terms
Descriptor/Qualifier:
Adult
Biomechanics
Female
Functional Laterality
Humans
Leg
Male
Muscle, Skeletal / physiology
Postural Balance*
Psychomotor Performance*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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