D. T. M. Ningrum, D. A. Setyawan, and Y. V. Mahyudi, “Effect of Structured Physical Activity Programs on Physical Fitness and Body Compotition Among Junior High School: A Randomized Controlled Trial: English”, Retos, vol. 68, pp. 249–257, May 2025, doi: 10.47197/retos.v68.111620.