Ittaqwa, Triatmo Joko Purnomo, Widya Nur Afifa, and Patrick Keilbart. “VO₂max Research: Endurance Capacity Levels of Pencak Silat Martial Artists”. Journal of Sports and Physical Activity 1, no. 1 (June 1, 2025): 47–58. Accessed January 12, 2026. https://www.jospa.spdfharmony.com/index.php/jospa/article/view/7.