Interaction Between Physical Demands and Job Strain on Musculoskeletal Symptoms and Work Performance

Details

• Personal Author:
  Bao, Stephen ; de Castro, A. B. ; Herting, Jerald R. ; Johnson, Kurt ; Kwon, Suyoung ; Lee, Soo-Jeong
• Description:
  This study investigated the interaction between physical demands and job strain on musculoskeletal symptoms in upper extremities (MSUE) and work performance. Two years of prospective data were analysed from 713 full-time workers from twelve manufacturing and healthcare facilities in Washington in the United States. Physical exposure was measured by the Strain Index and Threshold Limit Value for hand activity, giving rise to safe, action, and hazardous physical demand groups. Job strain was calculated as the ratio of psychological job demands to job control. Multilevel modelling analysis showed that job strain affected MSUE and limited work performance less in the high physical demand group than the safe group because the protective effect of job control was smaller in these groups. Findings may suggest that high physical demand jobs are structured such that workers have low job control or high physical demand groups experience job strain not adequately captured by psychosocial variables. Practitioner Summary: The effects of job strain and job control on musculoskeletal symptoms in upper extremities and work performance were smaller among workers with higher physical demands. This could imply that high physical demand jobs limit job control or psychosocial variables may not adequately capture job strain among high physical demand groups. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Ergonomics Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety Stress, Psychological
• Keywords:
  Author Keywords: Interaction Biomechanics Job Control Job Stress MSD Musculoskeletal Disorder Musculoskeletal Disorders Occupational Stress Psychosocial Factors Upper Extremities Work Disability Work Performance

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• ISSN:
  0014-0139
• Document Type:
  Text
• Funding:
  Grant ; Cooperative Agreement
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 10 ; OSHA Region 9 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  16 pdf pages
• Volume:
  66
• Issue:
  1
• NIOSHTIC Number:
  nn:20067259
• Citation:
  Ergonomics 2023 Jan; 66(1):34-48
• Contact Point Address:
  Suyoung Kwon, School of Nursing, University of Washington, Seattle, WA, USA
• Email:
  sykwon1@uw.edu
• Federal Fiscal Year:
  2023
• Performing Organization:
  University of California, Berkeley
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Ergonomics
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:30e2c5907dd6d3bf0a709b8a79a0affc8a944909c492fd30b7e52b042d2dbed1df8a1eaa1da5bed98225680a104a49410c1d6eac839fa111d96a897e2747aae1
• Download URL:
  https://stacks.cdc.gov/view/cdc/230714/cdc_230714_DS1.pdf
• File Type:
  [PDF - 1.65 MB ]