Back Extension over a Ball - lower back strength exercise

This exercise can be done over a stability ball as shown or you can lay over the edge of a bed or weight bench and have someone hold your feet down. Place your hands either across your chest or behind your head for additional challenge. Lift your upper body until it's perfectly in line with your lower body - higher isn't better... Hold this position for 5 seconds, then slowly lower to the start position. Repeat as instructed by your coach. As you get stronger, you can hold a light weight (up to 10 pounds) behind your head. Do not add weight unless specifically instructed to by your coach.