Abdulhassan Z, Hameed I. The Effect of Special Speed Exercises on The Variables of The First Arc of 400-Meter Hurdles Race Under 20 Years of Age. jope [انترنت]. 28 سبتمبر، 2024 [وثق 18 أبريل، 2025];36(3):869-7. موجود في: https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/2033