Shabrina, T.P., Syahruromadhon, A., Sensuse, D.I., Lusa, S., Fitriasari, N.S. and Mailinda, I. 2026. A Socio-Technical Model of Knowledge Sharing and Discovery in Social Fitness Apps among Indonesian Users: A PLS-SEM Approach. Ranah Research : Journal of Multidisciplinary Research and Development. 8, 3 (May 2026), 2024-2034. DOI:https://doi.org/10.38035/rrj.v8i3.2094.