Abedulrahman, Ayad. “Biomechanics Analysis Some Variables Step Fife Hurdle of the Effectiveness of 110 Hurdles”. Journal of Physical Education 26, no. 2 (June 28, 2014): 107–119. Accessed May 9, 2024. https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/77.