YOUSIF ALNJOLA, O.; عمر. A Comparative Study of the Performance Efficiency and Morphology of the Heart Among Long-Distance Runners. Al-Rafidain Journal For Sport Sciences (RJSS), [S. l.], v. 26, n. 81, p. 491–500, 2023. DOI: 10.33899/rjss.2023.141888.1198. Disponível em: https://jamh.uomosul.edu.iq/index.php/rjss/article/view/36335. Acesso em: 27 sep. 2025.