Aditya A, Sagitarius S, Ajid ON. INGGRIS THE EFFECT MIRROR DRILL AND BALL DROP DRILL ON THE REACTION SPEED OF KARATE KUMITE ATHLETES. jss [Internet]. 20Jul.2026 [cited 15Oct.2026];26(2):67-8. Available from: http://sportscience.ppj.unp.ac.id/index.php/jss/article/view/325