Al-Hajar, Y., and O. Khaleel. “Effects of Suggested Speed Endurance Training Program in Some Indicators of Buffers Systems in Blood After Anaerobic Effort for Youths and Advanced Short Distance Runners”. Al-Rafidain Journal For Sport Sciences, vol. 21, no. 68, Oct. 2018, pp. 47-65, doi:10.33899/rajsport.2018.163000.