2018-01-252018-01-25Unknownhttp://hdl.handle.net/2152.3/4928This image reflects William E. Thornton pushing on the Space Station prototype treadmill.TreadmillExerciseSpace MedicineresearchSpace StationprototypeWilliam E. Thorntonpushing12.80 S87-49141 Space Station prototype TM, W.T. pushing