Effect of positive reinforcement on underhand passing skills among secondary school students. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran, [S. l.], v. 11, n. 3, p. 547–563, 2026. DOI: 10.29407/js_unpgri.v11i3.27476. Disponível em: https://ojs.unpkediri.ac.id/index.php/pjk/article/view/27476. Acesso em: 21 jan. 2026.