Abstract
The orthostatic responses of 10 heat tolerant and five intolerant subjects were evaluated by three different test methods--standing, head-up tilt (HUT), and head-up tilt after prolonged exercise (HUTPE)--in a hot environment of 40 degrees C, 40% RH. No difference was found within the normal group between responses in the standing and HUT test. In the HUTPE test, orthostatic responses were inadequate and 5 of 10 subjects fainted. The heat intolerant subjects reacted to all three tests similarly to the normal group, though their heart rate was higher and 3 out of 5 fainted at an earlier phase in the HUTPE test.
Original language | English |
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Pages (from-to) | 1205-1208 |
Number of pages | 4 |
Journal | Aviation Space and Environmental Medicine |
Volume | 51 |
Issue number | 11 |
State | Published - Nov 1980 |