Aditya, Aditya, Sagitarius Sagitarius, and Oktoviana Nur Ajid. 2026. “INGGRIS THE EFFECT MIRROR DRILL AND BALL DROP DRILL ON THE REACTION SPEED OF KARATE KUMITE ATHLETES”. Sport Science 26 (2), 67-78. http://sportscience.ppj.unp.ac.id/index.php/jss/article/view/325.