Kneeling deceleration throwing exercise

The exercise shown is part of an exercise program for throwers. To perform the exercise, the patient begins in a half kneeling position, with their shoulder abducted to 90 degrees and externally rotated to 90 degrees, and facing away from their partner. Their partner throws a Plyoball over the thrower's shoulder and into the path of the throwing arm. The patient catches the ball and decelerates their arm through the entire path of the deceleration phase, and then quickly reverses their arm motion along the same path and throws the ball back to their partner.