I’ve always believed crunches to be the single most effective abdominal exercise. However, research from San Diego State University suggest just the opposite. Check out these results…

For strengthening the rectus abdominus (the muscle down the front of the abdomen), ranked most to least effective:

1. Bicycle maneuver
2. Captain’s chair
3. Crunches on exercise ball
4. Vertical leg crunch
5. Torso Track
6. Long arm crunch
7. Reverse crunch
8. Crunch with heel push
9. Ab Roller
10. Hover
11. Traditional crunch
12. Exercise tubing pull
13. Ab Rocker

For strengthening the obliques (on the sides):

1. Captain’s chair
2. Bicycle maneuver
3. Reverse crunch
4. Hover
5. Vertical leg crunch
6. Crunch on exercise ball
7. Torso Track
8. Crunch with heel push
9. Long arm crunch
10. Ab Roller
11. Traditional crunch
12. Exercise tubing pull
13. Ab Rocker