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Repeatability of a running heat tolerance test

Mee, J.A. and Doust, J. and Maxwell, N.S. (2015) Repeatability of a running heat tolerance test. Journal of Thermal Biology, 49-50. pp. 91-97. DOI: 10.1016/j.jtherbio.2015.02.010

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Abstract

At present there is no standardised heat tolerance test (HTT) procedure adopting a running mode of exercise. Current HTTs may misdiagnose a runner's susceptibility to a hyperthermic state due to differences in exercise intensity. The current study aimed to establish the repeatability of a practical running test to evaluate individual's ability to tolerate exercise heat stress. Sixteen (8M, 8F) participants performed the running HTT (RHTT) (30 min, 9 km h�1, 2% elevation) on two separate occasions in a hot environment (40 °C and 40% relative humidity). There were no differences in peak rectal temperature (RHTT1: 38.82±0.47 °C, RHTT2: 38.86±0.49 °C, Intra-class correlation coefficient (ICC)=0.93, typical error of measure (TEM)=0.13 °C), peak skin temperature (RHTT1: 38.12±0.45, RHTT2: 38.11±0.45 °C, ICC=0.79, TEM=0.30 °C), peak heart rate (RHTT1: 182±15 beats min�1, RHTT2: 183±15 beats min�1, ICC=0.99, TEM=2 beats min�1), nor sweat rate (1721±675 g h�1, 1716±745 g h�1, ICC=0.95, TEM=162 g h�1) between RHTT1 and RHTT2 (p>0.05). Results demonstrate good agreement, strong correlations and small differences between repeated trials, and the TEM values suggest low within-participant variability. The RHTT was effective in differentiating between individuals physiological responses; supporting a heat tolerance continuum. The findings suggest the RHTT is a repeatable measure of physiological strain in the heat and may be used to assess the effectiveness of acute and chronic heat alleviating procedures.

Item Type: Article
Subjects: Research Publications
Departments: College of Health and Behavioural Sciences > School of Sport, Health and Exercise Sciences
Date Deposited: 22 Mar 2016 03:35
Last Modified: 22 Mar 2016 03:35
ISSN: 0306-4565
URI: http://e.bangor.ac.uk/id/eprint/6395
Identification Number: DOI: 10.1016/j.jtherbio.2015.02.010
Publisher: Elsevier
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