Huda Eidan Muhammad, Sahira Razzaq Kadhim. The percentage of the contribution of mental alertness to the performance of the optional motor group for students of the College of Physical Education and Sports Sciences for Girls. ms [Internet]. 2024 Mar. 30 [cited 2024 Dec. 22];23(1):0112-2. Available from: https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/1289