Document Detail

Impaired postural compensation for respiration in people with recurrent low back pain.
MedLine Citation:
PMID:  12759796     Owner:  NLM     Status:  MEDLINE    
This study evaluated the degree to which the disturbance to posture from respiration is compensated for in healthy normals and whether this is different in people with recurrent low back pain (LBP), and to compare the changes when respiratory demand is increased. Angular displacement of the lumbar spine and hips, and motion of the centre of pressure (COP), were recorded with high resolution and respiratory phase was recorded from ribcage motion. With subjects standing in a relaxed posture, recordings were made during quiet breathing, while breathing with increased dead-space to induce hypercapnoea, and while subjects voluntarily increased their respiration to match ribcage expansion that was induced in the hypercapnoea condition. The relationship between respiration and the movement parameters was measured from the coherence between breathing and COP and angular motion at the frequency of respiration, and from averages triggered from the respiratory data. Small angular changes in the lumbopelvic and hip angles were evident at the frequency of respiration in both groups. However, in quiet standing, the LBP subjects had a greater displacement of their COP that was associated with respiration than the control subjects. The LBP group had a trend for less hip motion. There were no changes in the movement parameters when respiratory demand increased involuntarily via hypercapnoea, but when respiration increased voluntarily, the amplitude of motion and the displacement of the COP increased in both groups. The present data suggest that the postural compensation to respiration counteracts at least part of the disturbance to posture caused by respiration and that this compensation may be less effective in people with LBP.
Sarah K Grimstone; Paul W Hodges
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Publication Detail:
Type:  Clinical Trial; Journal Article     Date:  2003-05-21
Journal Detail:
Title:  Experimental brain research     Volume:  151     ISSN:  0014-4819     ISO Abbreviation:  Exp Brain Res     Publication Date:  2003 Jul 
Date Detail:
Created Date:  2003-09-25     Completed Date:  2003-10-21     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  218-24     Citation Subset:  IM    
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MeSH Terms
Biomechanical Phenomena
Low Back Pain / physiopathology*
Movement / physiology
Posture / physiology*
Respiratory Mechanics / physiology*
Thorax / physiology

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

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