Disturbances to Intrinsic Stiffness and Reflexive Muscle Responses Following Repeated Static Trunk Flexion

Details

• Personal Author:
  Bazrgari B ; Hendershot B ; Madigan ML ; Muslim K ; Nussbaum MA ; Toosizadeh N
• Description:
  Occupations involving frequent flexed trunk postures are associated with a higher incidence of low back pain (LBP). A single exposure to static trunk flexion leads to creep deformation of trunk viscoelastic tissues, reducing passive trunk stiffness. Such reductions in passive trunk stiffness require neuromuscular compensation to maintain mechanical equilibrium and stability of the spine, and may require a longer time for recovery than the initial exposure duration. Repeated static flexion may thus result in an accumulation of disturbances to trunk mechanical and neuromuscular behaviors. In this study, the effects of flexion duration and duty cycle on trunk intrinsic stiffness and reflex response were investigated. [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 Posture
• 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
• Pages in Document:
  82
• NIOSHTIC Number:
  nn:20059661
• Citation:
  Proceedings of the 36th Annual Meeting of the American Society of Biomechanics, August 15-18, 2012, Gainesville, Florida. Newark, DE: American Society of Biomechanics, 2012 Aug; :82
• Contact Point Address:
  M.A. Nussbaum, Virginia Tech, Blacksburg, VA, USA
• Email:
  nussbaum@vt.edu
• Federal Fiscal Year:
  2012
• Performing Organization:
  Virginia Polytechnic Institute and State University
• Peer Reviewed:
  False
• Start Date:
  20060801
• Source Full Name:
  Proceedings of the 36th Annual Meeting of the American Society of Biomechanics, August 15-18, 2012, Gainesville, Florida
• End Date:
  20120731
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:350f4337e961e9405b11c97e0e70a7539777911fc23f727328d490625865eacd73d15a9d059d2d1e400d55e9583cf22fe00cb461a72ab6f0a0fee0d747177169
• Download URL:
  https://stacks.cdc.gov/view/cdc/223810/cdc_223810_DS1.pdf
• File Type:
  [PDF - 556.66 KB ]