This flattens the arch of the foot. An unstable foot can and will cause shin pain, knee pain and low back pain. Those with excessive supination have the opposite problem. They often have inflexible feet with high arches. While such feet are stable, they don't absorb shock well.
Shoes can dramatically affect foot mechanics.
So, the next time you buy running shoes, go to a store whose staff is knowledgeable about foot mechanics and running shoes so that you get the kind of shoe that's best for your particular foot. If you'd like to learn more about the factors involved in picking the right kind of running shoe, you should consider ordering our special report, How to Pick the Right Running Shoes . Healthmeisters Publishing Company, Box 424, Chagrin Falls, OH 44022 Make sure you indicate what report you want with your order. Disclaimer For obvious reasons, we cannot assume the medical or legal responsibility of having any material on this site considered as a prescription for anyone. Treatment of illness or injury must be supervised by a physician or other licensed health professional.