Orthostatic responses in heat tolerant and intolerant subjects compared by three different methods.

G. Keren*, Y. Epstein, A. Ohri, A. Magazanik

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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 languageEnglish
Pages (from-to)1205-1208
Number of pages4
JournalAviation Space and Environmental Medicine
Volume51
Issue number11
StatePublished - Nov 1980

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