خويلدي ا, شكري س, djamel salim mehdine. Studying the levels of psychological pressure and its relationship to nervousness and motivation of the achievement of football players from the first and second professional league clubs – Males –. JSSTPA [Internet]. 2019 Dec. 1 [cited 2026 Feb. 27];16(2):108-22. Available from: https://revue.univ-mosta.dz/index.php/jsstpa/article/view/836