ASLEAWA, Wesam; SHIHAB, Sabreen. The effect of group exercises combined with repetitive training methods on developing speed endurance in under-21 football players. Journal of Physical Education, Baghdasd, Iraq., v. 37, n. 4, p. 1447–1460, 2025. DOI: 10.37359/JOPE.V37(4)2025.2386. Disponível em: https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/2386. Acesso em: 4 2026.