Jabbar, Adel, and Ismail Ibraheem. “The Effect of Using Incline Mat on the Speed of Learning Forward Straddle Roll on Floor Exercises”. Journal of Physical Education 33, no. 2 (June 28, 2021): 132–138. Accessed May 2, 2024. https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/1149.