Effectiveness of breathing exercise in reducing competitive anxiety among roller skating athletes. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran, [S. l.], v. 11, n. 3, p. 514–528, 2025. DOI: 10.29407/js_unpgri.v11i3.27237. Disponível em: https://ojs.unpkediri.ac.id/index.php/pjk/article/view/27237. Acesso em: 1 jan. 2026.