The effect of interval training and push-up exercises on cardiorespiratory endurance and upper body strength in adolescents. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran, [S. l.], v. 11, n. 2, p. 321–335, 2025. DOI: 10.29407/js_unpgri.v11i2.26379. Disponível em: https://ojs.unpkediri.ac.id/index.php/pjk/article/view/26379. Acesso em: 2 sep. 2025.