Jebur Al-Majidi, A., Saleh Fathi, R., & Al Fadhly, S. (2020). Training in Competition Speed Intensity and in the Light of the Motor Energy Law to Develop the Physical-physiological Abilities and the 400m Run for the Youth. International Journal of Psychosocial Rehabilitation, 24(5), 7218-7226. https://doi.org/10.61841/412xen24