Document Detail

Sensory deprivation and balance control in idiopathic scoliosis adolescent.
MedLine Citation:
PMID:  16307257     Owner:  NLM     Status:  MEDLINE    
Balance control is influenced by the availability and integrity of sensory inputs as well as the ability of the balance control mechanisms to tailor the corrective action to the gravitational torque. In this study, to challenge balance control, visual and ankle proprioceptive information were perturbed (eyes closed and/or tendon vibration). We masked sensory inputs in order: (1) to test the hypothesis that adolescent idiopathic scoliosis (AIS), compared to healthy adolescent, relies more on ankle proprioception and/or visual inputs to regulate balance and (2) to determine whether it is the variation or the amplitude of the balance control commands of AIS that leads to greater body sway oscillations during sensory deprivation. By manipulating the availability of the sensory inputs and measuring the outcomes, center of pressure (CP) range and velocity variability, we could objectively determine the cost of visual and/or ankle proprioception deprivation on balance control. The CP range was larger and the root mean square (RMS) of the CP velocity was more variable for AIS than for control participants when ankle proprioception was perturbed. This was observed regardless of whether vision was available or not. The analysis of the sway density curves revealed that the amplitude rather than the variation of the balance control commands was related to a larger CP range and greater RMS CP velocity for AIS. The present results suggest that AIS, compared to control participants, relies much more on ankle proprioception to control the amplitude of the balance control commands.
Martin Simoneau; Nadia Richer; Pierre Mercier; Paul Allard; Nomand Teasdale
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-11-24
Journal Detail:
Title:  Experimental brain research     Volume:  170     ISSN:  0014-4819     ISO Abbreviation:  Exp Brain Res     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-04-07     Completed Date:  2007-05-01     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  576-82     Citation Subset:  IM    
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MeSH Terms
Analysis of Variance
Ankle / physiopathology
Movement / physiology*
Postural Balance / physiology*
Proprioception / physiology
Scoliosis / physiopathology*
Sensory Deprivation / physiology*
Visual Perception

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

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