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