The Effectiveness of Ergonomic Training and Exercise in Workers with Non-Specific Chronic Low Back Pain in an Automotive Factory: A Randomized Controlled Trial

OBJECTIVE: To evaluate the effects of an exercise program combined with ergonomics training on pain, functional capacity, sleep quality, and fatigue in automotive workers with low back pain. METHODS: Fifty-six automotive workers with low back pain were randomly assigned to an intervention group (ergonomics training plus exercise) or a control group (ergonomics training only). Outcomes were assessed at baseline and after 12 weeks. RESULTS: Both groups improved significantly after treatment (p<0.05). The intervention group showed greater improvements in pain, functional capacity, and sleep quality than the control group (p<0.05), with no significant between-group difference in fatigue severity. CONCLUSIONS: Exercise combined with ergonomics training is more effective than ergonomics training alone for reducing pain and improving function and sleep quality in automotive workers with low back pain.