ناجي أحمد قايد الوجيه أحمد; محمد حجار خرفان. The effectiveness of training programs according to circumstantial variables in maintaining the physical fitness of football players in the Republic of Yemen. Journal of Sport Science Technology and Physical Activities, [S. l.], v. 19, n. 2, p. 233–246, 2025. DOI: 10.5281/zenodo.15271310. Disponível em: https://revue.univ-mosta.dz/index.php/jsstpa/article/view/204. Acesso em: 13 apr. 2026.