“Physical Fitness of Students in the Futsal Extracurricular at SMP Negeri 9 Semarang”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 18, no. 1 (February 17, 2026): 0871–0879. Accessed February 17, 2026. https://competitor.idjournal.eu/index.php/competitor/article/view/579.