hamed mari ali, sameer Al khalde marwan, Salim Albasso alwaleed. The empact of special exercises using )Rubber cord (on the special endurance and achievement of swimming 100 meters breaststroke for youth. BERJ [Internet]. 2024 Sep. 1 [cited 2025 Oct. 26];20(3):545-61. Available from: https://moss.uomosul.edu.iq/index.php/berj/article/view/38060