Hussein, Hassan Adnan, and Prof. Dr. Sadiq Youssef Mohammed. “The Effect of Two Different Rest Intervals on the Development of Strength Endurance and Speed Endurance in Soccer Players Aged 12–14 Years ”. International Journal of Aquatic Research and Environmental Studies, vol. 6, no. S5, July 2026, pp. 2251-9, https://doi.org/10.70102/k9m55y41.