Dakhil, Ehab. “Maximum Special Strength Endurance Training In 400m Youth Hurdles Biomechanical Step Phases and Achievement”. Journal of Physical Education 29, no. 3 (September 28, 2017): 143–155. Accessed July 1, 2026. https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/198.