Mohammed ِAhmed, and Hisham hamdan. 2011. “Impact Pneumatic Drills, Especially in the Development of Wind Speed and the Rate of Metabolism of Players With Special Needs in the Five-Game Football”. Journal of Physical Education 23 (4): 20. https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/1617.