Abdull karim Al-Hayali, M., معن, Shams Al-Deen, A. and ازاد 2025. The effect of two methods of ballistic resistance training on some aspects of upper body strength in the long jump for Specialized School athletes. Al-Rafidain Journal For Sport Sciences (RJSS). 26, 80 (Jun. 2025), 87–97. DOI:https://doi.org/10.33899/rjss.2023.1783840.