Erschienen in:
01.05.2012 | Letter to the Editor
Caffeine, dopamine and thermoregulation
verfasst von:
Bart Roelands, Romain Meeusen
Erschienen in:
European Journal of Applied Physiology
|
Ausgabe 5/2012
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Excerpt
We wish to comment on the recent publication by Ganio et al. (
2011) relating to the effects of caffeine on performance in the heat. Based on their demonstration of caffeine’s ergogenicity and lack of effects on core temperature during exercise in high ambient temperature, these authors concluded that caffeine counteracts the negative consequences of elevated core temperature on performance. It is yet not clear through which mechanism this happens, but one possibility is that changes in neurotransmitter concentrations are responsible (influence antagonism adenosine on brain dopamine concentration; Ganio et al.
2011). The effects of caffeine on performance and thermoregulation in hot environments appear not as unanimous as they are for normal ambient temperature. Some studies found an ergogenic effect of caffeine administration, with (Del Coso et al.
2008) or without (Ganio et al.
2011) addition of carbohydrates, while others found no effects of caffeine on performance in the heat (Cheuvront et al.
2009; Roelands et al.
2011). …