Somboonnadee, W., Srikuta, P. and Satayavongthip, B. 2025. The Participatory Development Program to Promote Ergonomic Self-Care Competence for Elderly Rice Farmers. Ratchaphruek Journal. 23, 1 (Apr. 2025), 148–164. DOI:https://doi.org/10.14456/rpjnrru.2025.10.