“Effectiveness of Skipping Exercises and Bench Step-up Againts Explosive Power Leg Muscles”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 6, no. 4 (December 28, 2020): 1–14. Accessed April 2, 2025. https://ojs.unpkediri.ac.id/index.php/pjk/article/view/15316.