Anticipation of slippery floors: muscle onsets and co-contraction of the stance leg

Details

• Personal Author:
  Cham R ; Chambers AJ
• Description:
  INTRODUCTION: Falls are a major cause of injury, death and disability in the elderly 4,6,8. In relatively healthy older adults, falls are often precipitated by base of support (BOS) perturbations such as slips and trips 1,5,6. The use of proactive strategies has been revealed in gait studies using testing paradigms involving repeated exposure to a known perturbation 2,3. The goal of this study, which has not been previously addressed, is to investigate the impact of anticipating real slippery floors on the muscle activity (onset and co-contractions) in the leading/left leg during gait on dry surfaces. DISCUSSION AND CONCLUSIONS: In summary, anticipating slippery surfaces affects lower leg muscle activation onsets and ankle/knee stiffness. While young and older subjects adopted similar strategies at the ankle when anticipating slippery floors, there were age-related differences associated with the upper leg muscles. It is worth noting the most critical recovery responses to slips are generated at the knee and hip, not the ankle. Description provided by NIOSH
• Subjects:
  • Accidents, Occupational
  • Age Factors
  • Aging
  • Men
  • Musculoskeletal System
  • Occupational Health
  • Safety
  • Women
• Keywords:
  • Humans
  • Men
  • Women
  • Age-groups
  • Age-factors
  • Accidents
  • Physiology
  • Physiological-function
  • Physiological-factors
  • Physiological-effects
  More +
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Abstract or Summary
• Place as Subject:
  Ohio ; OSHA Region 3 ; OSHA Region 5 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20039867
• Citation:
  Proceedings of the International Society of Biomechanics XXth Congress and the 29th Annual Meeting of the American Society of Biomechanics, July 31 - August 5, 2005, Cleveland, Ohio. Newark, DE: The American Society of Biomechanics, 2005 Jul; :467
• Email:
  ajcst49@pitt.edu
• Federal Fiscal Year:
  2005
• NORA Priority Area:
  Work Environment and Workforce: Special Populations
• Performing Organization:
  University of Pittsburgh, Pittsburgh, Pennsylvania
• Peer Reviewed:
  False
• Start Date:
  20020501
• Source Full Name:
  Proceedings of the International Society of Biomechanics XXth Congress and the 29th Annual Meeting of the American Society of Biomechanics, July 31 - August 5, 2005, Cleveland, Ohio
• End Date:
  20050430
• Download URL:
  https://stacks.cdc.gov/view/cdc/192932/cdc_192932_DS1.pdf
• File Type:
  [PDF - 88.35 KB]
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:15c5e9bffaf73d130bd9c1c03d40c5073b300537f086d5344de0501db01d9656bb11e9c6223f2c8741d7dbc0e55963e3d18986de9afff2dee4f7614428516120