hazim, omar, عمر, A. Hussein Tobel, and علي. “The Effectiveness of the Specific Fatigue Index in Predicting the Technical Performance Level of Advanced Parkour Gymnasts in Nineveh Governorate”. Al-Rafidain Journal For Sport Sciences (RJSS), vol. 27, no. 85, June 2025, pp. 302-24, doi:10.33899/rjss.2024.185229.