Ahmed, Deham, and Kmal Naser. “The Effect of Exercises Using Rubber Ropes for Developing Boxing Skill Performance of Torso Rotation and Explosive Power in Youth Boxers”. Journal of Physical Education 32, no. 2 (June 30, 2020): 56-62. Accessed August 14, 2021. https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/994.