Improvement Physical Fitness Level on Mountain Climbing Athletes: High-Intensity Interval Training and Oregon Circuit Training Effect. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran, [S. l.], v. 7, n. 1, p. 19–36, 2021. DOI: 10.29407/js_unpgri.v7i1.15746. Disponível em: https://ojs.unpkediri.ac.id/index.php/pjk/article/view/15746. Acesso em: 2 apr. 2025.