سايح عا, زياني ز, كمال با. The effect of physical effort according to energy sources on the development of some physical attributes (speed - endurance of speed) according to the playing centers in U17 football. JSSTPA [Internet]. 2024 Jun. 1 [cited 2026 Jan. 13];21(1):221-3. Available from: https://revue.univ-mosta.dz/index.php/jsstpa/article/view/542