أ.د. مواهب حميد أ.ع.ط.أ.س.ق. 2020. The effect of special exercises using rubber ropes to develop special endurance and achieve a 200-meter freestyle swimming. Modern Sport. 19, 4 (Dec. 2020), 0156. DOI:https://doi.org/10.54702/msj.2020.19.4.0156.