Julia Firman, Ivana, and Boy Indrayana. “The Effect Of Strength Training On Oi Tsuki Chudan’s Punch Ability In Karate Athletes”. Indonesian Journal of Physical Education and Sport Science 5, no. 2 (May 1, 2025): 210-223. Accessed May 6, 2025. https://www.journal.unucirebon.ac.id/index.php/ijpess/article/view/1171.