Effects of quadriceps fatigue on the biomechanics of gait and slip propensity

Details

• Personal Author:
  Lockhart TE ; Parijat P
• Description:
  This study examines how lower extremity fatigue of the quadriceps alters gait variables related to slip propensity. Sixteen healthy young adults were recruited to walk across vinyl floor surfaces in states of fatigue and no fatigue. Kinematic and kinetic data were collected using a three-dimensional motion analysis system and force plates. The results indicated a significant increase in both the heel contact velocity and required coefficient of friction and a decrease in the transitional acceleration of the whole body center of mass and peak knee joint moment in the fatigue trials. Thus, suggesting that slip propensity could increase with fatigue. Additionally, there was increased knee flexion and reduced ankle dorsiflexion at the heel contact phase of the gait cycle during fatigue trials. These findings provide new insights into the biomechanical relationship between localized muscle fatigue and gait parameters associated with slip propensity. The present study concluded that localized muscle fatigue affects gait parameters and hence can be considered as a potential risk factor for slip-induced falls. [Description provided by NIOSH]
• Subjects:
  Accidental Falls Accidents Biomechanical Phenomena Fatigue Men Musculoskeletal System Occupational Health Safety Women
• Keywords:
  Author Keywords: Gait Biomechanics Falls Force Humans Kinetics Locomotion Muscles Musculoskeletal-system Physical-reactions Physiological-effects Physiological-fatigue Physiology Posture Slip Propensity Slips And Falls Walking-surfaces

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• ISSN:
  0966-6362
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  28
• Issue:
  4
• NIOSHTIC Number:
  nn:20043332
• Citation:
  Gait Posture 2008 Nov; 28(4):568-573
• Contact Point Address:
  Thurmon E. Lockhart, Grado Department of Industrial and System Engineering, 0118, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
• Email:
  lockhart@vt.edu
• Federal Fiscal Year:
  2009
• Performing Organization:
  Virginia Polytechnic Institute and State University
• Peer Reviewed:
  True
• Start Date:
  20040915
• Source Full Name:
  Gait and Posture
• End Date:
  20100630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e2d4fe2becd460e3581ad7bf188385a53922ed030dcbd7460270b199761eb3003845dd849616c4a89938e7adeb0cc299ebfc0dfc1726746c48c6c9fed9410e35
• Download URL:
  https://stacks.cdc.gov/view/cdc/195255/cdc_195255_DS1.pdf
• File Type:
  [PDF - 353.30 KB ]