Mohammad Abdullah, Ayad, and omar Ahmed Al-Hayali. “The Impact of Concurrent and Sequential Training of the Phosphagen and Lactate Energy Systems on Several Functional Variables and the Performance in the 200-Meter Sprint for Juniors”. Al-Rafidain Journal For Sport Sciences 27, no. 85 (October 1, 2024): 561–600. Accessed October 2, 2025. https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50527.