Document Detail


Effects of exercise-induced low back pain on intrinsic trunk stiffness and paraspinal muscle reflexes.
MedLine Citation:
PMID:  23182221     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to (1) compare trunk neuromuscular behavior between individuals with no history of low back pain (LBP) and individuals who experience exercise-induced LBP (eiLBP) when pain free, and (2) investigate changes in trunk neuromuscular behavior with eiLBP. Seventeen young adult males participated including eight reporting recurrent, acute eiLBP and nine control participants reporting no history of LBP. Intrinsic trunk stiffness and paraspinal muscle reflex delay were determined in both groups using sudden trunk flexion position perturbations 1-2 days following exercise when the eiLBP participants were experiencing an episode of LBP (termed post-exercise) and 4-5 days following exercise when eiLBP had subsided (termed post-recovery). Post-recovery, when the eiLBP group was experiencing minimal LBP, trunk stiffness was 26% higher in the eiLBP group compared to the control group (p=0.033) and reflex delay was not different (p=0.969) between groups. Trunk stiffness did not change (p=0.826) within the eiLBP group from post-exercise to post-recovery, but decreased 22% within the control group (p=0.002). Reflex delay decreased 11% within the eiLBP group from post-exercise to post-recovery (p=0.013), and increased 15% within the control group (p=0.006). Although the neuromuscular mechanisms associated with eiLBP and chronic LBP may differ, these results suggest that previously-reported differences in trunk neuromuscular behavior between individuals with chronic LBP and healthy controls reflect a combination of inherent differences in neuromuscular behavior between these individuals as well as changes in neuromuscular behavior elicited by pain.
Authors:
Emily M Miller; Babak Bazrgari; Maury A Nussbaum; Michael L Madigan
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2012-11-23
Journal Detail:
Title:  Journal of biomechanics     Volume:  46     ISSN:  1873-2380     ISO Abbreviation:  J Biomech     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-02-08     Completed Date:  2013-09-06     Revised Date:  2014-02-25    
Medline Journal Info:
Nlm Unique ID:  0157375     Medline TA:  J Biomech     Country:  United States    
Other Details:
Languages:  eng     Pagination:  801-5     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
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MeSH Terms
Descriptor/Qualifier:
Biomechanical Phenomena
Case-Control Studies
Electromyography
Exercise / physiology*
Humans
Low Back Pain / etiology*,  physiopathology*
Male
Muscle, Skeletal / innervation,  physiopathology
Neuromuscular Junction / physiopathology
Reflex / physiology
Spinal Nerves / physiopathology
Torso
Young Adult
Grant Support
ID/Acronym/Agency:
R01 AR046111/AR/NIAMS NIH HHS; R01AR046111/AR/NIAMS NIH HHS; R01OH008504/OH/NIOSH CDC HHS
Comments/Corrections

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


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