The effect of heat acclimation or acclimatisation on physiological markers of heat adaptation: preliminary meta-analysis data

Christopher J Tyler,Tom Reeve,Gary J Hodges,Stephen S Cheung

doi:10.1186/2046-7648-4-s1-a110

Christopher J Tyler, Tom Reeve + Show 2 more

Open Access

https://doi.org/10.1186/2046-7648-4-s1-a110

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Abstract

Exercise in the heat places a greater physiological strain upon the body than exercising in temperate conditions, so a number of strategies have been adopted to attenuate this strain. Heat acclimation (or acclimatisation) (HA) has regularly been reported to induce beneficial cardiovascular and thermoregulatory adaptations. However, the magnitudes of benefit reported range from none to substantial, and the differences reported may be due to a wide range of HA protocols being used. The aim of this meta-analysis was to quantify the magnitude of effect that HA has on key physiological markers of adaptation, and to see whether the magnitude of effect is related to the volume or intensity of heat stress experienced.

Highlights

Exercise in the heat places a greater physiological strain upon the body than exercising in temperate conditions, so a number of strategies have been adopted to attenuate this strain
The magnitudes of benefit reported range from none to substantial, and the differences reported may be due to a wide range of HA protocols being used. The aim of this meta-analysis was to quantify the magnitude of effect that HA has on key physiological markers of adaptation, and to see whether the magnitude of effect is related to the volume or intensity of heat stress experienced
A subset of the data (n = 46 manuscripts) is presented here; manuscripts were included if resting core temperature (Tcore), resting heart rate (HR), resting plasma volume (PV) and/or core temperature at sweat onset (Tsweat onset) data were reported

Summary

Introduction

The effect of heat acclimation or acclimatisation on physiological markers of heat adaptation: preliminary meta-analysis data Introduction Exercise in the heat places a greater physiological strain upon the body than exercising in temperate conditions, so a number of strategies have been adopted to attenuate this strain. Heat acclimation (or acclimatisation) (HA) has regularly been reported to induce beneficial cardiovascular and thermoregulatory adaptations.

Results

Conclusion