NASA Project Mercury astronaut candidate Captain James W. Wood, USAF, undergoes treadmill test at Wright-Patterson Air Force Base, Ohio. Astronaut candidate is seated on a stool over the treadmill while his resting pulse is taken. Doctor attaches an instrument on subject's arm to record his pulse rate. Astronaut candidate walks on the treadmill while doctor takes a reading on the instrument. He is to walk until his pulse rate reaches 180 beats-per-minute. The longer it takes to reach this maximum heart rate, the more fit the candidate is deemed to be, and the higher his score.
NASA Project Mercury astronaut candidate Captain Archie T. Iddings, USAF undergoes Equilibrium & Vibration test at Wright-Patterson Air Force Base, Ohio. Astronaut climbs up to a raised chair. Doctors help him strap up. Subject seated on chair with his feet dipped in ice water. He operates an instrument in hand. He blindfolds himself.
NASA Project Mercury astronaut candidate James W. Wood undergoes test on a Tilt Table at Wright-Patterson Air Force Base, Ohio. Astronaut lies on steeply inclined table for 25 minutes. This test is conducted to measure ability of the heart to compensate for body in an unusual position for an extended time. Doctor examines the patient. This test is preceded by the Harvard Step test in which a candidate must step rapidly up and down on a 20-inch step for 5 minutes.
NASA Project Mercury astronaut candidate Captain Archie T. Iddings, USAF, undergoes Harvard-Step and Tilt Table tests at Wright-Patterson Air Force Base, Ohio. Astronaut candidate steps up on a raised board. Subject lies on steeply inclined table. The test conducted to measure ability of the heart to compensate for body in an unusual position for an extended time.
NASA Project Mercury astronaut candidate Major Hal Christian, USAF, undergoes an equilibrium and vibration test at Wright-Patterson Air Force Base, Ohio. Subject seated on a chair which rotates simultaneously on two axes. He maintains the chair on an even keel by means of a control stick with and without vibration, normally and blindfolded.
NASA Project Mercury astronaut candidate undergoes treadmill test at Wright-Patterson Air Force Base, Ohio. Subject walks at a constant rate on a moving platform which is elevated one degree each minute. Test continues until heart beat reaches 180 beats per minute.
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