Ergonomic Knowledge and Its Impact on Musculoskeletal Disorders (MSDs) Among Market Porters: A Cross-Sectional Study

Introduction: Musculoskeletal Disorders (MSDs) are among the most common occupational diseases affecting market porters due to non-ergonomic working conditions. Risk factors such as individual, occupational, and environmental factors contribute to the prevalence of MSDs. This study examines the relationship between ergonomic knowledge and MSDs among market porters. Methods: This observational analytical study employed a cross-sectional approach with a total sampling technique involving 62 market porters who met the inclusion and exclusion criteria. The study was conducted from February to September 2024. Data collection included measuring ergonomic knowledge using a questionnaire and assessing MSD risk using the Nordic Body Map (NBM) questionnaire. Data were analyzed using the chi-square test to examine the relationship between variables and multiple logistic regression to explore the association between ergonomic knowledge and MSDs by controlling for the influence of other variables. Results: The chi-square analysis revealed a significant relationship between ergonomic knowledge and MSDs (p=0.002). Logistic regression analysis showed that workers with low ergonomic knowledge had a higher risk of developing MSDs (AOR = 11.6; 95% CI = 2.221–61.278; p=0.004). Conclusion: A significant relationship exists between ergonomic knowledge and MSDs among market porters. Preventive efforts based on participatory ergonomics are necessary to reduce MSD risk. The main limitation of this study is the use of self-reported questionnaires to assess ergonomic knowledge and MSD risk, which may introduce subjective bias.