Kadraoui, Brahim. “The Effect of Combining the Reverse Pyramid Training System With Frank Horwill’s 5-Tier System on Improving Athletic Performance in Youth Football Players”. Journal of Sport Science Technology and Physical Activities 22, no. 1 (June 1, 2025): 62–73. Accessed February 26, 2026. https://revue.univ-mosta.dz/index.php/jsstpa/article/view/50.