The reverse back extension is a great modification to a traditional back extension on a stability ball. To begin, place the ball on the floor and lay over the ball with your abdominal area resting on the ball. Next, plant your hands firmly on the floor in front of the ball, then with your weight forward, lift your legs off the ground moving them upward towards the ceiling. This forces you to extend your low back and hence perform a reverse back extension.To increase the difficulty level, perform this exercise with the ball on top of a bench for a greater range of motion. This modification would be considered more of an advanced exercise.
Melissa Allen, BS, CPT, CES. Please visit my website at http://www.optimumcondition.org/fitness-center.html