arifianto, irfan, Yoga Wiranda, Muhammad Ridwan, and Afrizal S. “Metode Circuit Training Terhadap Peningkatan Kemampuan Vo2max Pemain Sepakbola”. Sport Science 20, no. 2 (September 26, 2020): 138-148. Accessed June 10, 2026. http://sportscience.ppj.unp.ac.id/index.php/jss/article/view/54.