ABEDULRAZAQ, Baidaa. The Effect Of Speed Endurance Ability Training Using Circuit Style On Some Physiological Indicators And Young 400m Running Achievement. Journal of Physical Education, Baghdasd, Iraq., v. 29, n. 2, p. 347–364, 2017. DOI: 10.37359/JOPE.V29(2)2017.171. Disponível em: https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/171.. Acesso em: 2 may. 2024.