Taha Al-Hajar, Y., and O. Yousif Khaleel. “Effects of Suggested Speed Endurance Training Program in Some Physiological Variables After Anaerobic Effort for Youths and Advanced Short Distance Runners”. Al-Rafidain Journal For Sport Sciences (RJSS), vol. 21, no. 68, Oct. 2018, pp. 26-46, doi:10.33899/rajsport.2018.162999.