Hashm, Ali, Ahmed Thamr, and Ahmed Thamr. “Analytical Study of Some of the Biomechanical Variables of the Start Phase and Their Relation With Achievement of the 50 M Freestyle Swimming In Advance Swimmers”. Journal of Physical Education 29, no. 4 (December 28, 2017): 86–98. Accessed June 7, 2026. https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/270.