Mubarak, Tahir, Rian Triprayogo, and Ida Zubaida. “The Effect of External Weight Training on Body Fat and Muscle”. SPIN: Journal of Sport Performance Indonesia 1, no. 1 (May 31, 2026): 45–51. Accessed June 8, 2026. https://www.journalmpci.com/index.php/spin/article/view/1498.