Occupation-Related Musculoskeletal Disorders Among Watermelon Farmers in Taiwan: A Cross-Sectional Study

This study employed a quantitatively driven mixed-methods approach to investigate crop-specific musculoskeletal disorder (MSD) prevalence and ergonomic risks among Taiwanese watermelon farmers, comparing them with pear (canopy-based) and pineapple (static-stooping) cohorts. A total of 218 participants were recruited (60 watermelon, 60 pear, 63 pineapple, and 35 non-farmers). Structured questionnaires quantified MSD prevalence and ergonomic exposures, while qualitative interviews provided a supportive operational context. Watermelon farmers reported a prominent lower-limb dominant discomfort profile, with a hip/thigh disorder prevalence (36.7%) significantly higher than pear (13.1%) and pineapple (11.1%) farmers. Multivariate logistic regression showed that daily working hours (aOR = 1.38) and uncomfortable posture duration (aOR = 1.33) were independent predictors of hip/thigh disorders. This elevated prevalence may be associated with the combined effects of prolonged deep squatting, dynamic heavy lifting, and unstable sandy terrain. Furthermore, low personal protective equipment adoption was primarily related to environmental incompatibility (sand accumulation and thermal stress). Although the cross-sectional design limits causal inferences, these findings highlight the need for targeted, crop-specific ergonomic interventions, such as breathable, sand-resistant joint supports.