SABEEH KAREEM W. The effect ofintensity of speed competitionexercises in the heavy competence speed in the ascending hierarchical method in developing some physical abilities and the achievement of 100 m running competition under the age of 20. Psychosocial rehabilitation [Internet]. 2020 Apr. 30 [cited 2025 Jul. 14];24(2):7291-7. Available from: https://psychosocial.com/index.php/ijpr/article/view/2601