Comparison of The Effects of Zig-Zag Run And Shuttle Run Training On 50-Meter Sprint Speed In Football Athletes. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, [S. l.], v. 18, n. 1, p. 0151–0159, 2026. DOI: 10.26858/cjpko.v18i1.494. Disponível em: https://competitor.idjournal.eu/index.php/competitor/article/view/494. Acesso em: 4 feb. 2026.