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