Effects of exercise-induced low back pain on intrinsic trunk stiffness and paraspinal muscle reflexes

Details

• Personal Author:
  Bazrgari B ; Madigan ML ; Miller EM ; Nussbaum MA
• Description:
  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. [Description provided by NIOSH]
• Subjects:
  Adolescent Aging Behavior Biomechanical Phenomena Men Musculoskeletal Diseases Musculoskeletal System Nervous System Nervous System Diseases Occupational Health Safety

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• Keywords:
  Adolescents Age-groups Author Keywords: Low Backpain Back-injuries Biomechanics Etiology Exercise Humans Muscle-function Muscles Musculoskeletal-system Musculoskeletal-system-disorders Neuromuscular-function Neuromuscular-system Neuromuscular-system-disorders Physical-fitness Physiology Reflex Statistical-analysis Trunk Stiffness

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• ISSN:
  0021-9290
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Kentucky ; OSHA Region 3 ; OSHA Region 4 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  46
• Issue:
  4
• NIOSHTIC Number:
  nn:20043142
• Citation:
  J Biomech 2013 Feb; 46(4):801-805
• Contact Point Address:
  Michael L. Madigan, Engineering Science and Mechanics (0219), Virginia Tech, Blacksburg, VA 24061
• Email:
  mlmadigan@vt.edu
• Federal Fiscal Year:
  2013
• Performing Organization:
  Virginia Polytechnic Institute and State University
• Peer Reviewed:
  True
• Start Date:
  20060801
• Source Full Name:
  Journal of Biomechanics
• End Date:
  20120731
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:77ed0a075a000b4bfc534e6601a45eb1fae98a2e31e6dc24cf932228f7eabc175db70831309983bafa55318158aceb4869d97fea5d874d9e71c68962429df27a
• Download URL:
  https://stacks.cdc.gov/view/cdc/195145/cdc_195145_DS1.pdf
• File Type:
  [PDF - 378.68 KB ]