The Elgin Archxerciser provides a resistance for key foot exercises of the arch and foot. While the Archxerciser is designed as a powerful adjunctive tool for rehab patients to athletes, it is perfect for any person who wishes to strengthen their feet as a preventative measure, so that they don't suffer from sore feet. If you are a rehab patient, Archxerciser affords you relief from sore feet by strengthening your foot's intrinsic and extrinsic musculature and it treats a variety of common foot ailments, including plantar fasciitis and heel spur syndrome. While this effective tool has a wide range of applications and has proven to be effective for treating the foot & ankle after surgery, both the Archxerciser and Pro Archxerciser have been scientifically proven to improve an athlete's jumping performance and acts as a preventative aid against sore feet for those who stand for extended periods.