Thermometry and calorimetry assessment of sweat response during exercise in the heat.

European Journal of Applied Physiology
Andreas D Flouris, Stephen S Cheung

Abstract

Our objective was to characterise sweat rate responses in a hot environment during rest and subsequent increasing levels of exercise in relation to thermometrically (i.e., rectal, tympanic, mean skin and mean body temperatures) and calorimetrically derived (i.e., change in body heat storage) thermal parameters. Ten healthy males volunteered and entered an environmental chamber set at 42 degrees C. Participants rested seated during their first hour inside the chamber. Thereafter, they exercised to volitional exhaustion on a cycle ergometer at 20 W with step increments of 20 W h(-1). Across time, fluctuations in sweat rate were systematically associated with similar fluctuations in the integral of body heat storage (t = 13.16, P < 0.001), but not rectal (t = 0.98, P > 0.05), tympanic (t = 0.81, P > 0.05), mean skin (t = 0.12, P > 0.05), or mean body (t = 0.93, P > 0.05) temperatures. In addition, 95% limits of agreement and regression analyses showed that the changes in sweat rate demonstrated the highest agreement and strongest associations with changes in the integral of body heat storage. It is concluded that in a hot environment during rest and subsequent increasing levels of exercise sweat rate is associated with the cumulat...Continue Reading

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Citations

Jan 7, 2014·European Journal of Applied Physiology·Andreas D FlourisGlen P Kenny
Aug 15, 2014·European Journal of Applied Physiology·Andreas D FlourisGlen P Kenny
Mar 2, 2011·International Journal of Biometeorology·Andreas D Flouris
Nov 28, 2012·European Journal of Applied Physiology·Zachary J SchladerToby Mündel
May 23, 2012·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Mohammad Abdoli-EramakiJoan Stevenson
May 27, 2016·Temperature : Multidisciplinary Biomedical Journal·Andreas D Flouris
Sep 29, 2011·Microcirculation : the Official Journal of the Microcirculatory Society, Inc·Andres E CarrilloAndreas D Flouris
Dec 21, 2010·Microcirculation : the Official Journal of the Microcirculatory Society, Inc·Andreas D Flouris, Stephen S Cheung
May 7, 2015·Scandinavian Journal of Medicine & Science in Sports·A D Flouris, Z J Schlader
Aug 12, 2016·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Andres E CarrilloGlen P Kenny
Aug 15, 2014·Sports Medicine·Katy E GriggsVictoria L Goosey-Tolfrey
Feb 10, 2011·Journal of Applied Physiology·Craig G CrandallJ Thomas Vaughan
Apr 4, 2017·F1000Research·Andreas D Flouris, Glen P Kenny
Nov 13, 2020·Frontiers in Physiology·Michela MasèGiacomo Strapazzon

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