Age and gender moderate the effects of localized muscle fatigue on lower extremity joint torques used during quiet stance

Details

• Personal Author:
  Lin D ; Madigan ML ; Nussbaum MA ; Shibata PA ; Wojcik LA ; Lin D ; Madigan ML ; Nussbaum MA ; Shibata PA ; Wojcik LA
• Description:
  This study examined the effects of localized muscle fatigue, age, and gender on lower extremity joint torques used during quiet stance. Thirty-two participants performed exercises designed to fatigue the ankle plantarflexors, knee extensors, torso extensors, or shoulder flexors. Body kinematics and ground reaction forces were obtained both before and after the exercises, and joint torques were derived via inverse dynamics. Single joint fatigue affected torque variability at all lower extremity joints, with similar changes for both age groups. Males and females exhibited increased ankle torque variability after different tasks, with males showing more variability after ankle fatigue and females after shoulder and lumbar fatigue. Correlations between peak torques and torque variability differed between males and females and between age groups in certain cases. The results of this study suggested that both age and gender moderate the effects of fatigue on postural control and should be considered when developing strategies to prevent occupational falls. [Description provided by NIOSH]
• Subjects:
  Age Factors Aging Biomechanical Phenomena Fatigue Men Musculoskeletal System Occupational Health Safety Women
• Keywords:
  Age-factors Author Keywords: Equilibrium Biodynamics Biomechanics Body-mechanics Extremities Human-factors-engineering Muscle-function Physical-exercise Physical Strength Physiological-fatigue Physiological-response Physiology Posture Working Conditions

  More +
• ISSN:
  0167-9457
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article ; Journal Article
• Place as Subject:
  Michigan ; OSHA Region 3 ; OSHA Region 5 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH) ; National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health ; Workplace Safety & Health
• Location:
  North America ; North America
• Volume:
  30
• Issue:
  3
• NIOSHTIC Number:
  nn:20039862
• Citation:
  Hum Mov Sci 2011 Jun; 30(3):574-583
• Contact Point Address:
  L.A. Wojcik & Associates, LLC, 2531 Jackson Avenue, Suite #349, Ann Arbor, MI 48103, USA
• Email:
  jcik@lawojcikassociates.com
• Federal Fiscal Year:
  2011
• Performing Organization:
  Virginia Polytechnic Institute and State University
• Peer Reviewed:
  True
• Start Date:
  20030901
• Source Full Name:
  Human Movement Science
• End Date:
  20080831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b055dbcafb0325ea5088d1d6853e022f939ab7879ce17a8bedf074bf5d4f7f14dc988d450cefa1b00bad4cc12df6b1c5740091c8a0f9120792b319037cf70af7
• Download URL:
  https://stacks.cdc.gov/view/cdc/192928/cdc_192928_DS1.pdf
• File Type:
  [PDF - 247.65 KB ]