Exercise system

1. An exercise system comprising:

an inflatable exercise ball having a polymeric shell and a bore comprising a flexible pipe extending therethrough wherein the bore further comprises a first flange fitting, a second flange fitting, and a tube of resilient material; and

a resistance apparatus disposed at least partially within the bore.

2. The exercise system of claim 1 wherein the inflatable exercise ball further comprises a grip pattern disposed on an outer surface of the polymeric shell.

3. The exercise system of claim 1 wherein the resistance apparatus comprises an elastomeric tube.

4. The exercise system of claim 3 wherein the resistance apparatus further comprises a handle.

5. The exercise system of claim 3 wherein the resistance apparatus further comprises a plug.

6. The exercise system of claim 1 wherein the ball is about 30 cm to about 110 cm in diameter when inflated.

7. An inflatable exercise ball comprising:

an inflatable elastomeric shell having a first opening and a second opening;

a tube of resilient material extending between the first opening and the second opening; and

a first flange between the first opening and the tube and a second flange between the second opening and the tube.

8. The exercise ball of claim 7 further comprising a grip pattern disposed on an outer surface of the elastomeric shell.

9. The exercise ball of claim 7 wherein the ball is about 30 cm to about 110 cm in diameter when inflated.

10. The exercise system of claim 5 wherein the plug is sized and shaped to prevent the elastomeric tubing from being completely pulled through the bore.

11. The exercse system of claim 10 wherein the plug is a polymeric ring disposed on one end of the tube of resilient material.

12. The exercise systemt of claim 10 wherein the plug is a hook disposed on one end of the tube of resilient material.