Al-Dabbagh انمار عبد الستار إبراهيم. “The Effect of Physical Skill Exercise by Sycle Style and by Interval Training on Explosive Power & On Serve-Smash Skills”. College of Basic Education Research Journal 22, no. 2 (June 1, 2026): 59–81. Accessed June 7, 2026. https://berj.uomosul.edu.iq/index.php/berj/article/view/63552.