ناصر یوسف, and رياض علي الراوي. “The Effect of Biorhythm Cycles (physical, Psychological and Mental) on the Athletic Achievement ”. Journal of Sport Science Technology and Physical Activities 14, no. 1 (December 31, 2017): 69–86. Accessed March 2, 2026. https://revue.univ-mosta.dz/index.php/jsstpa/article/view/342.