Fathulla HJ. The Effect of Work According to the Different Energy Production Systems on the Speed of Defensive Movements in Handball and the Recovery Period for Students of the Faculty of Physical Education: . HUJ [Internet]. 2024 Jun. 30 [cited 2024 Jul. 3];9(2):430-45. Available from: https://huj.uoh.edu.iq/index.php/HUJ/article/view/huj-10555