Effects of Rotation Frequency and Task Order on Localised Muscle Fatigue and Performance During Repetitive Static Shoulder Exertions

Details

• Personal Author:
  Agnew MJ ; Horton LM ; Nussbaum MA
• Description:
  Though widely considered to reduce physical exposures and increase exposure variation, there is limited evidence that rotating between tasks is effective in reducing the risk of work-related musculoskeletal disorders (WMSDs). The purpose of this study was to assess the effects of rotation, specifically focusing on rotation frequency and task order, on muscle fatigue and performance when rotating between tasks that load the same muscle group. Twelve participants completed six experimental sessions during which repetitive static shoulder abduction tasks were performed at two exertion levels for one hour either with or without rotation. Compared to only performing a higher or lower exertion task, rotating between the two tasks decreased and increased fatigue, respectively. Increasing rotation frequency adversely affected task performance, and task order had a minor effect on muscle fatigue. These rotation parameters may be important considerations when implementing rotation in the workplace. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Ergonomics Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety
• Keywords:
  Author Keywords: Rotation Frequency Biomechanics MSD Muscle Fatigue Muscle Function Musculoskeletal Disorders Performance Shoulder Task Order Task Performance Upper Extremities

  More +
• ISSN:
  0014-0139
• Document Type:
  Text
• Funding:
  Grant
• 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:
  55
• Issue:
  10
• NIOSHTIC Number:
  nn:20054021
• Citation:
  Ergonomics 2012 Oct; 55(10):1205-1217
• Contact Point Address:
  Maury A. Nussbaum, Industrial and Systems Engineering, Virginia Tech, 250 Durham Hall (0118), Blacksburg, VA, USA
• Email:
  nussbaum@vt.edu
• Federal Fiscal Year:
  2013
• Performing Organization:
  Virginia Polytechnic Institute and State University, Blacksburg
• Peer Reviewed:
  True
• Start Date:
  20010701
• Source Full Name:
  Ergonomics
• End Date:
  20260630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0f35dc08651d5b37fbd246c5a0a8e60b0af796d307155a90b2a156ada929ace38a1f4d705813da4949239c1ae4b371d28dae8a0571b59787478c7274a4672b05
• Download URL:
  https://stacks.cdc.gov/view/cdc/216670/cdc_216670_DS1.pdf
• File Type:
  [PDF - 579.84 KB ]