Abstract
The purpose of this chapter is to summarize the efferent physiological responses to heat stress—increased skin blood flow and sweating—that are necessary during sport and physical activity to maintain temperature homeostasis and thus prevent a heat-related injury. These responses facilitate heat loss so heat storage, and an accompanying increase in core temperature, is moderated. Accordingly, human heat balance is discussed along with the primary mechanisms controlling human thermoregulation during exercise heat stress. Also covered are the substantial challenges faced by the cardiovascular system as a consequence of supporting high skin blood flow and sweating.
Keywords
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- C :
-
Rate of heat loss via convection
- E :
-
Rate of heat loss via evaporation
- HR:
-
Heart rate
- K :
-
Rate of heat loss via conduction
- M :
-
Metabolic rate
- (M − W):
-
Metabolic heat production
- R :
-
Rate of heat loss via radiation
- S :
-
Rate of heat storage
- V.O2max :
-
Rate of maximal oxygen uptake
- W :
-
External work
- WBGT:
-
Wet bulb globe temperature
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Wingo, J.E., Crandall, C.G., Kenny, G.P. (2018). Human Heat Physiology. In: Casa, D. (eds) Sport and Physical Activity in the Heat. Springer, Cham. https://doi.org/10.1007/978-3-319-70217-9_2
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DOI: https://doi.org/10.1007/978-3-319-70217-9_2
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