This original Archxerciser foot strengthening imitaion. Designed strengthening intrinsic extrinsic foot musculature increasing range motion metatarsophalangeal joints. athletes study using Archxerciser. Subjects randomly assigned training left foot, wh or serving control, weeks. training dg ts time. six-week programm, subjects retested toe flexor strength jump performance. results astounding**: results confirmed subjects gained inch vertical, 4 inches horizontal jumping distance! tt foot muscles ignored wn training.
