“Effect of Plyometric Push-Up Training on Arm Muscle Strength in Junior High School Extracurricular Activities in Mataram”, Compet. J. Pendidik. Kepelatihan Olahraga, vol. 17, no. 3, pp. 3448–3454, Oct. 2025, Accessed: Mar. 19, 2026. [Online]. Available: https://competitor.idjournal.eu/index.php/competitor/article/view/517