Effects of Exercise-Induced Low Back Pain on Intrinsic Trunk Stiffness

Details

• Personal Author:
  Bazrgari B ; Madigan M ; Miller E ; Nussbaum M
• Description:
  Low Back Pain (LBP) is the most significant musculoskeletal health problem in industry, accounting for 20% of occupational injury and 40% of worker compensation. Impaired neuromuscular control of the lumbar spine is associated with LBP. Fundamental characteristics of this neuromuscular control include passive tissue properties, active muscle stiffness, and reflex behavior. Any impairment in these characteristics could lead to an insufficient response to a spinal disturbance and cause LBP or injury (e.g. excessive stress or strain in tissues). Fundamental characteristics of neuromuscular control contribute to what are termed "effective" stiffness and damping in response to a perturbation, with effective stiffness being a combined measure of intrinsic stiffness and a reflex contribution. In an effort to understand the characteristics associated with LBP, studies have compared trunk responses between individuals with and without LBP. For example, following sudden trunk load release, individuals with LBP are reported to have greater effective trunk stiffness and lower effective trunk damping, as well as delayed reflex latencies, compared to healthy individuals. Since comparisons between those with and without LBP are susceptible to inter-individual differences, additional insight may be provided by collecting repeated measurements from individuals who experience intermittent LBP. Comparing measures of neuromuscular control between known periods of pain and no pain in these individuals could reveal how/if neuromuscular control changes with the presence of pain, as well as how it differs with individuals who do not suffer from LBP. Additionally, since effective stiffness includes a reflex contribution, determining the intrinsic stiffness before reflexes occur could be beneficial for the further understanding of LBP. Therefore, the purpose of this study was to investigate effects of exercise-induced LBP on intrinsic stiffness using sudden trunk flexion position perturbations. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety
• Keywords:
  Biomechanics Low Back Disorders Low Back Pain MSD Musculoskeletal Disorders Neuromuscular Function
• Publisher:
  American Society of Biomechanics
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Abstract or Summary
• Place as Subject:
  OSHA Region 3 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20059656
• Citation:
  Proceedings of the 35th Annual Meeting of the American Society of Biomechanics, August 10-13, 2011, Long Beach, California. Newark, DE: American Society of Biomechanics, 2011 Aug; :281
• Contact Point Address:
  Emily Miller, Virginia Tech - Wake Forest School of Biomedical Engineering and Sciences, Blacksburg, VA, USA
• Email:
  millerem@vt.edu
• Federal Fiscal Year:
  2011
• Performing Organization:
  Virginia Polytechnic Institute and State University
• Peer Reviewed:
  False
• Start Date:
  20060801
• Source Full Name:
  Proceedings of the 35th Annual Meeting of the American Society of Biomechanics, August 10-13, 2011, Long Beach, California
• End Date:
  20120731
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:160df60ef47436f46a109309b908e7cbef8aa845b8edde5608cbeba8fa6a5c8c274a828e975f0156cc7679efd5c7dc7ecbe17f6cba0c3cf8c630209623b8dc85
• Download URL:
  https://stacks.cdc.gov/view/cdc/223805/cdc_223805_DS1.pdf
• File Type:
  [PDF - 394.05 KB ]