Thermoregulatory responses to cold water at different times of day.

@article{Castellani1999ThermoregulatoryRT,
  title={Thermoregulatory responses to cold water at different times of day.},
  author={John Castellani and Andrew John Young and Jack Kain and Michael N. Sawka},
  journal={Journal of applied physiology},
  year={1999},
  volume={87 1},
  pages={243-6}
}
This study examined how time of day affects thermoregulation during cold-water immersion (CWI). It was hypothesized that the shivering and vasoconstrictor responses to CWI would differ at 0700 vs. 1500 because of lower initial core temperatures (T(core)) at 0700. Nine men were immersed (20 degrees C, 2 h) at 0700 and 1500 on 2 days. No differences (P > 0.05) between times were observed for metabolic heat production (M, 150 W. m(-2)), heat flow (250 W. m(-2)), mean skin temperature (T(sk), 21… CONTINUE READING

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