ناجي أحمد قايد اأ, محمد حخ. The effectiveness of training programs according to circumstantial variables in maintaining the physical fitness of football players in the Republic of Yemen. JSSTPA [Internet]. 2025 Nov. 11 [cited 2026 Apr. 13];19(2):233-46. Available from: https://revue.univ-mosta.dz/index.php/jsstpa/article/view/204