Ali Sheerkhan L, Rustum Yaqoob L. Effect of special exercises according to the difficulty of the training unit on the physical abilities and the performance of 200m sprinters. sportk [Internet]. 5 de junio de 2022 [citado 10 de mayo de 2024];11:50. Disponible en: https://revistas.um.es/sportk/article/view/526691