If you use them to move the part of your leg below the knee, they help strengthen the shin and the back of the leg, depending on the exercise. Sit in a chair and straighten the leg until not locked, then lower slowly. For the back of the leg, stand and do a hamstring curl- bring the heel up toward the back end. I agree with the above poster about not wearing them for walking or running- seems to me they could also mess up the hip- its that momentum.
at 8:46 PM on Dec. 29, 2008