The effect of specific agility exercises according to the phosphagen system on some biomotor and functional capabilities and the level of the triple jump and its phases for juniors under 16 years old - Mustafa, Asst. L. Mariwan Hamed; Hamed, Asst. L. Dashni Talib; Khan, Asst. Prof. Dr. Bebak Muhammad Ali (Sulaimani Journal for Humanities, 2026)