K. Asmer, Mohammed, and محمد. “The Effect of Using Learning Program According to the Schedule Changing of Practice (distribute- Massed) in Learning Some Motor Skills on Floor Movements Mattress in Gymnastics”. Al-Rafidain Journal For Sport Sciences (RJSS) 19, no. 62 (June 25, 2025): 195–214. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/rjss/article/view/35717.