The effect of special exercises according to the aerobic capacity threshold and the target time on special endurance And the achievement of running the 800 meters youth. cbej [Internet]. 2022 Sep. 20 [cited 2026 Jun. 20];1(SI):172-87. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/5964