A great physician guide on health issues for the master athlete appears in MEDICINE & SCIENCE IN SPORTS & EXERCISE. It is: Selected Issues for the Master Athlete and the Team Physician: A Consensus Statement. The guide is free – click on this link and see options.
Many of our ENGO® customers are master athletes. Fat pads on the plantar surface decrease in thickness and our skin becomes less supple as we age. This makes those of us over 50 more susceptible to blisters, callusing, and other kinds of trauma to the foot.