2018-04-182018-04-181974-04-23http://hdl.handle.net/2152.3/8165Graphs of biomedical data for Skylab crew members labeled Skylab Crew Health Trend-M171 Heart Rate at Max Exercise dated Apr 23, 1974.Dr. Charles BerrySpace MedicineSkylab 2Skylab 3Skylab 4biomedical dataCrew Health TrendM171 Heart Rate at Max Exercise