Heat stress exacerbates the reduction in middle cerebral artery blood velocity during prolonged self-paced exercise.

@article{Priard2015HeatSE,
  title={Heat stress exacerbates the reduction in middle cerebral artery blood velocity during prolonged self-paced exercise.},
  author={Julien D. P{\'e}riard and S{\'e}bastien Racinais},
  journal={Scandinavian journal of medicine & science in sports},
  year={2015},
  volume={25 Suppl 1},
  pages={135-44}
}
This study examined the influence of hyperthermia on middle cerebral artery mean blood velocity (MCA Vmean). Eleven cyclists undertook a 750 kJ self-paced time trial in HOT (35 °C) and COOL (20 °C) conditions. Exercise time was longer in HOT (56 min) compared with COOL (49 min; P < 0.001). Power output in HOT was significantly lower from 40% of work completed onward (P < 0.01). Rectal temperature increased to 39.6 ± 0.6 °C (HOT) and 38.8 ± 0.5 °C (COOL; P < 0.01). Skin temperature, skin blood… CONTINUE READING
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