Dawood, Abdul Alkaliq, and Ahmed Naji. “The Effect of Special Exercises by a Proposed Training Device to Improve the Angle of the body’s Inclination for the Two Stages of Starting and Increasing Speed and Achievement Ran 100 M under 18 Years”. Journal of Physical Education, vol. 31, no. 4, Dec. 2019, pp. 117-23, https://doi.org/10.37359/JOPE.V31(4)2019.898.