Perceptual versus Physiological Heat Strain During Exercise-Heat Stress

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Authors
  1. Tikuisis, P.
  2. McLellan, T.M.
  3. Selkirk, G.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
The physiological strain index (PSI) has been proposed as a universally applicable measure of exercise-heat-strain. Unknown is whether this index, based on normalized increases in core temperature and heart rate, is matched by its perceptual analog. By using a similar mathematical construct to the PSI, the perceptions of thermal sensation and perceived exertion were combined, and the resultant index, PeSI, was compared with its physiological counterpart, denoted as PhSL, for the exercise-heat stress specific to this study. Twenty-six young and healthy subjects were semi-impermeable clothing and walked (3.5 km-h 1(_))) under hot conditions (40C and 30% RH) until exhaustion or when their core temperature reached 39.5C. Subjects were divided into two fitness groups (endurance trained (T) and untrained (U) comprised of 10 men and 3 women each. TRUNCATED
Keywords
Exercise time;Exertion
Report Number
DCIEM-SL-2000-125 — Scientific Literature
Date of publication
01 Jun 2001
Number of Pages
9
Reprinted from
Medicine & Science in Sports & Exercise, vol 34, no 9, 2002, p 1454-1461
DSTKIM No
CA021783
CANDIS No
518508
Format(s):
Hardcopy

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