جليل خليل ق. using plyometric exercises to improve some physical Abilities , And the Effect on the speed of some Basic skills in Football-age-16-years. jope [Internet]. 2019 Jun. 1 [cited 2024 May 18];20(2):53-78. Available from: https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/765