Major muscle groups involved: Abdominals, upper arms, shoulders, upper back
Execution:
Walk out to the basic prone bridge keeping your arms perpendicular to the ground, at a right angle with your torso. Keep your abdominals pulled in to stabilize your trunk. Push your hands forward into the ground/floor rolling the ball backwards. Allow your chest to lower toward the ground in control. Keep your elbows straight. Push straight down with your hands as you pull your torso forward and up to your starting position. Your leg/foot position on the ball dictates the level of difficulty. The farther you walk out on the ball the greater the challenge.
Stability Ball Shoulder Extension Video
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