Physical and psychosocial ergonomic risk factors for low back pain in automobile manufacturing workers

Autor: Jonathan L. Vandergrift, Judith E. Gold, Laura Punnett, Alexandra L. Hanlon
Rok vydání: 2011
Předmět:
Zdroj: Occupational and Environmental Medicine. 69:29-34
ISSN: 1470-7926
1351-0711
DOI: 10.1136/oem.2010.061770
Popis: Objectives To examine the association between ergonomic physical and psychosocial exposures and the risk of prevalent and incident low back pain (LBP) in a longitudinal cohort of automobile manufacturing workers. Methods Ergonomic exposure intensity and LBP presence were determined through questionnaires at baseline (n¼1181) and to workers in the same job 1 year later (n¼505). Models were constructed using logbinomial regression with special attention to interactions between ergonomic exposures. Results Awkward back posture (prevalence ratio (PR) 1.12, 95% CI 1.07 to 1.17), hand force (PR 1.06, 95% CI 1.02 to 1.10), physical effort (PR 1.10, 95% CI 1.04 to 1.16) and whole body vibration (PR 1.04, 95% CI 1.01 to 1.08) were each associated cross-sectionally with LBP. Awkward back posture (RR 1.13, 95% CI 0.98 to 1.31) and hand force (RR 1.07, 95% CI 0.93 to 1.22) also predicted incident LBP, although estimates were statisticallylessprecise.Neitherjobcontrol, psychological demands, nor job strain was independently related to risk of incident LBP. Among participants reporting high physical ergonomic exposures and moderate to high job control, increasing job demands was associated with a reduced LBP risk (RR 0.72, 95% CI 0.52 to 1.00). Among participants reporting high physical exposures and low job control, psychological demands was associated with an increased LBP risk (RR 1.30, 95% CI 1.02 to 1.66). Conclusions Psychosocial workplace interventions for LBP should prioritise jobs in which there are high physical ergonomic exposures. Future studies of LBP should examine the interactions between physical ergonomic risk factors.
Databáze: OpenAIRE