Al-Naqeeb, O., and A. 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, vol. 24, no. 75, Oct. 2021, pp. 129-4, doi:10.33899/rjss.2021.169806.