Effects of Localized Muscle Fatigue on Recovery from a Postural Perturbation Without Stepping

Details

• Personal Author:
  Davidson BS ; Madigan ML ; Nussbaum MA ; Wojcik LA
• Description:
  Several investigations have demonstrated that localized muscle fatigue (LMF) causes an increase in postural sway measures during quiet stance. Since many falls are likely the result of a postural perturbation, this study investigated the effects of LMF on balance recovery from sagittal plane postural perturbations. Thirty-two participants (16 young, 16 older) were tested. Postural perturbations were administered with ballistic pendulums before and after exercises to fatigue the lumbar extensors and plantar flexors. Measures of balance recovery were based on the center of pressure (COP) and center of mass (COM) trajectories and the maximum perturbation that could be withstood without stepping. A covariate analysis that included initial conditions at the time of the perturbation was also performed. The results demonstrated changes in the COM trajectory that were consistent with an LMF-induced decrement in the ability to recover from the perturbations without stepping. Interpretation of the COP trajectory was presented in light of the COM and indicated a modified postural control strategy following LMF. [Description provided by NIOSH]
• Subjects:
  Age Factors Aging Biomechanical Phenomena Fatigue Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety
• Keywords:
  Age-factors Age-groups Author Keywords: Fatigue Balance Biomechanics Muscle-function Muscle-physiology Muscle-stress Muscles Musculoskeletal-system Perturbation Physiology Posture Statistical-analysis

  More +
• ISSN:
  0966-6362
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; OSHA Region 3 ; OSHA Region 8 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  29
• Issue:
  4
• NIOSHTIC Number:
  nn:20035719
• Citation:
  Gait Posture 2009 Jun; 29(4):552-557
• Contact Point Address:
  Bradley Davidson, University of Colorado at Denver and Health Sciences Center, 12800 East 19th Avenue, Mail Stop 8343, PO Box 6511, Aurora, CO 80045
• Email:
  bradley.davidson@ucdenver.edu
• Federal Fiscal Year:
  2009
• Performing Organization:
  Virginia Polytechnic Institute and State University
• Peer Reviewed:
  True
• Start Date:
  20030901
• Source Full Name:
  Gait and Posture
• End Date:
  20080831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7737696e7250a4414c65deb534a805caa12554630a8b786e9491346c73b598a090599c6fab26e368bee046ba02cae2d70ceef9b98442927cb849f54cd3164d92
• Download URL:
  https://stacks.cdc.gov/view/cdc/187488/cdc_187488_DS1.pdf
• File Type:
  [PDF - 255.92 KB ]