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  • Title: Identifying work organization targets for a work-related musculoskeletal symptom prevention program.
    Author: Huang GD, Feuerstein M.
    Journal: J Occup Rehabil; 2004 Mar; 14(1):13-30. PubMed ID: 15055501.
    Abstract:
    While research linking work organization factors to work-related musculoskeletal disorders has been increasing, there is still a need to delineate specific dimensions to be targeted by intervention programs. The present cross-sectional investigation identified work organization risk factors for low back (LB) and upper extremity (UE) symptoms and determined the magnitudes of such associations. Questionnaires containing items on ergonomic, individual psychosocial, and occupational psychosocial factors were administered to a sample of workers (n = 248 U.S. Marines) in previously identified high-risk job categories for musculoskeletal disorders. Study participants were categorized into groups of either having LB symptoms only, UE symptoms only, concurrent LB and UE symptoms, or being asymptomatic on the basis of self-report. Additionally, measures of pain intensity, physical function, and mental health were obtained. Linear regression analyses adjusting for demographics, ergonomic factors, and individual psychosocial factors indicated that decision authority and experienced responsibility for work were significant correlates for pain intensity during the week. Logistic regression analyses indicated that ergonomic stressors were a risk factor for all symptomatic groups (OR = 1.02 per point increase; 95% CI: 1.0-1.1). Time pressure (OR = 1.2 per point increase; 95% CI: 1.0-1.4) was also a significant risk factor for all symptomatic groups, while cognitive processing placed workers at higher risks for concurrent LB and UE symptoms (OR = 1.2; 95% CI: 1.0-1.4). Interpersonal demands placed individuals at a lower risk for LB symptoms (OR = 0.8; 95% CI: 0.5-1.0). Findings highlight the importance of intervention approaches that address time pressure, cognitive processing factors, and interpersonal demands at work. In light of past biobehavioral studies, these results also suggest that job redesign and interventions that address a worker's workstyle when faced with increased work demands may help reduce the likelihood of musculoskeletal symptoms and/or their intensity.
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