the The effect of Oregon circuit training and Tabata on increasing VO2Max in male junior karate athletes at Tako Dojo Kodim 0206 Dairi in 2025: eng. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, [S. l.], v. 17, n. 3, p. 2771–2779, 2025. DOI: 10.26858/cjpko.v17i3.402. Disponível em: http://competitor.ojsunm.ac.id/index.php/competitor/article/view/402. Acesso em: 7 dec. 2025.