NAGHAM HATEM HAMEED; HAIDER FAIQ AL-SHAMAA; FIRAS HAIDER. Preparing movement exercises using a proposed laser device on the heel of the foot to learn and develop the speed of rotation and accomplish to the discus throw for youth U 20. Modern Sport, [S. l.], v. 23, n. 1, p. 0123–0133, 2024. DOI: 10.54702/mp2dfy77. Disponível em: https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/1266.. Acesso em: 8 may. 2024.