Ahmed Al-Hayali, omar, عمر, Mohammed Abdul-Allah, A., & اياد. (2025). The effect of simultaneous and sequential exercises of the phosphagen and lactate energy systems on a number of physical and functional variables and achievement in the 200-meter sprint for juniors. Al-Rafidain Journal For Sport Sciences (RJSS), 26(81), 341–382. https://doi.org/10.33899/rjss.2023.140177.1185