An exercise device for {TAIL ~ use} in dystrophy therapy employs a compression spring which provides {HEAD ~ an adjustable resistance force} 
An exercise device for { TAIL ~ use } in dystrophy therapy employs a compression spring which provides { HEAD ~ an adjustable resistance force }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD