Effect of Ergonomic Training on Musculoskeletal Pain in Blue-Collar Workers at a University

Abstract Background Work-related musculoskeletal disorders (WRMSDs) arise from job tasks or work environments, increasing in industrialized nations. Ergonomic interventions help reduce WRMSDs, improving worker health and productivity. The aim of this study is to determine the impact of ergonomic posture training on musculoskeletal pain in blue-collar employees. Methods The ethical approval for this follow-up study was obtained. Conducted at Akdeniz University (May 2023-June 2024), the study included 367 of 449 eligible blue-collar workers (82%). Three data collections occurred: baseline, post-intervention (6 months), and follow-up (12 months). Ergonomic training involved posture education, reminders, brochures, and workplace posters. The VAS Scale and Nordic Musculoskeletal Questionnaire assessed pain in nine body regions. Cochran's Q, McNemar, Friedman, and Wilcoxon tests analyzed statistical differences. Results Pain prevalence significantly decreased in the neck, shoulders, upper back, lower back, and knees (p < 0.05), while hip pain increased. VAS scores showed significant reductions (p < 0.05). The first 6-month incidence was 29.3%, and the second 6-month incidence was 15.0%. Before the training, the prevalence rate of WRMSDs in at least one body region was 53.67, whereas it decreased to 29.30 after the intervention. The rate ratio (RR) was 0.54 (95% CI: 0.39-0.74). The incidence rate of WRMSDs in at least one body region decreased by 45.41% after the intervention compared to the pre-intervention period. Conclusions Training effectively reduced WRMSDs but lacked long-term impact. Sustainable improvements require workplace engineering and administrative measures. Key messages • Workplace ergonomics training is crucial for preventing and reducing chronic issues such as WRMSDs. • Training can reduce WRMSDs and pain intensity or frequency, but without workplace reorganization and ergonomic job restructuring, its effectiveness is limited.