aeed, A.A.S. and Awad, J.M. (2021) “The effect of mental-muscular relaxation exercises in developing the skills of blocking the wall and defending the court for volleyball players”, Kufa Journal of Physical Education Sciences, 1(3), pp. 78–93. Available at: https://journal.uokufa.edu.iq/index.php/kjpes/article/view/15402 (Accessed: 25 June 2026).