The AB Roller is only effective if you use it properly. If you push with your arms instead of using your abs, or if you use momentum to rock forward, you will decrease the effectiveness of the exercise. The AB Roller activated the abdominal muscles only marginally more than a regular crunch.
Does an ab wheel really work?
Theory of the Ab Wheel The exercise wheel is effective in strengthening your core not only because it targets your abs but also because it works the muscles of your lower back. You need strong back muscles to counteract the natural arching of your back that occurs as you roll forward on the wheel.
Are Ab Rollers a good workout?
The abs roller is a piece of equipment thats often tucked to the side of your gym, but its a great way to build your core muscles. However, it can be intimidating: Its a difficult move to master, and for a good reason—its a direct core exercise that works your deep ab muscles.