Document Detail

Energy transfer across the lumbosacral and lower-extremity joints in patients with low back pain during sit-to-stand.
MedLine Citation:
PMID:  19154839     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To examine the transfer of energy through the pelvis and the lower limb during sit-to-stand (STS) in low back pain (LBP) subjects with or without a straight-leg raise sign. DESIGN: Cross-sectional. SETTING: Biomechanics laboratory. PARTICIPANTS: Three groups, each of 20 subjects, participated. The first group consisted of asymptomatic subjects, and the other 2 groups of consisted of LBP subjects (duration between 7 days and 12 weeks) with and without a straight-leg raise sign. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: The work done and the power of the pelvis, thigh, and leg segments during STS were determined. RESULTS: Energy was transferred from the pelvis to the thigh segment and then to the leg segment, and this was achieved mainly by passive mechanisms. The power flow of the pelvis segment was significantly decreased in subjects with LBP. Although the power of the lower-limb segments was decreased, the total work done of these segments was increased. CONCLUSIONS: STS is a more energy-demanding and less efficient task for subjects with LBP, either with or without a positive straight-leg raise sign. Such increases in energy demand may further exacerbate back pain, and treatment should be developed to restore a more efficient energy transfer pattern.
Gary L Shum; Jack Crosbie; Raymond Y Lee
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  90     ISSN:  1532-821X     ISO Abbreviation:  Arch Phys Med Rehabil     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2009-01-21     Completed Date:  2009-02-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  United States    
Other Details:
Languages:  eng     Pagination:  127-35     Citation Subset:  AIM; IM    
School of Health Professions, University of Plymouth, Plymouth, UK.
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MeSH Terms
Chronic Disease
Cross-Sectional Studies
Energy Transfer / physiology*
Hip Joint / physiopathology*
Low Back Pain / classification,  physiopathology*,  rehabilitation
Lumbar Vertebrae / physiopathology*
Movement / physiology
Pain Measurement

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

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