By moving the point of securing the handholds along the length of the arcuate guide plate, the user can re position the upper ends of the handholds from a location above the user station to {HEAD ~ a position} behind {TAIL ~ the user station} 
behind
By moving the point of securing the handholds along the length of the arcuate guide plate , the user can re position the upper ends of the handholds from a location above the user station to { HEAD ~ a position } behind { TAIL ~ the user station }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL