.y.Al Saffar, Ziad, and زياد. 2025. “The Effect of Aerobic Endurance Training With Proposed Periods Rest On the Fatigue Index and Recovery Curve of Heart Rate for Football Players”. Al-Rafidain Journal For Sport Sciences (RJSS) 20 (64):95-108. https://doi.org/10.33899/rajsport.2014.81902.