FOR INSTRUCTIONAL PURPOSES EXERCISE IS PERFORMED AT SUB-MAXIMAL SPEED! The arms are extended upward and overhead while holding medicine ball as a jump is performed. The knees, hips, and shoulders should go through complete extension, and the ankles should completely plantar-flexed at the top of the jump. The ball is released at a 45˚ angle behind and over the head for maximum distance. The feet can leave the ground.