2018-03-152018-03-15Unknownhttp://hdl.handle.net/2152.3/6959A graph reflecting the SL-4 crew members Leg Volume Changes from Muscle Pumping.muscle pumping recordSL-4Leg Volume Percent ChangeresearchCommanderScience PilotPilotDr. William E. ThorntongraphSpace Medicinerecoverylower body negative pressure