Al-Naqeeb, Omar, and Ahmed A.Algany Taha. “Response of a Number of Gas Exchange Variables to Aerobic Physical Exertion of Varying Intensity Children Aged (10-12) Years”. Al-Rafidain Journal For Sport Sciences 24, no. 75 (October 1, 2021): 129–149. Accessed October 2, 2025. https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50155.