“The Differential Effects of Circuit Training and High-Intensity Interval Training (HIIT) Methods on VO₂Max Improvement in Pencak Silat Athletes at SMA Negeri 2 Taruna Pamong Praja, East Java”. 2025. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 17 (2): 1039-47. https://competitor.idjournal.eu/index.php/competitor/article/view/65.