Heat induced fatigue and changes of the EEG is not related to reduced perfusion of the brain during prolonged exercise in humans

P Rasmussen; Henrik Stie; Lars Nybo; Bodil Nielsen

doi:10.1016/j.jtherbio.2004.08.047

Heat induced fatigue and changes of the EEG is not related to reduced perfusion of the brain during prolonged exercise in humans

P Rasmussen, Henrik Stie, Lars Nybo, Bodil Nielsen

August Krogh Sektionen for Human Fysiologi

41 Citationer (Scopus)

Abstract

(1) Exercise-induced hyperthermia is associated with a gradual slowing of the electroencephalogram (EEG), an increase in perceived exertion (RPE) and a lowering of the cerebral perfusion.

(2) During exercise EEG changes were linearly correlated to core temperature (r ²=0.67; P<0.05) and RPE (r ² =0.54, P<0.05), but manipulation of cerebral perfusion by voluntary breathing efforts and by CO ₂ inhalation did not alter RPE or EEG.

(3) In conclusion EEG changes with hyperthermic exercise are not a simple effect of the reduced cerebral perfusion but may relate to the fatigue that arises concomitantly with the increases in core and brain temperatures.

Originalsprog	Engelsk
Tidsskrift	Journal of Thermal Biology
Vol/bind	29
Udgave nummer	7-8
Sider (fra-til)	731-737
Antal sider	7
ISSN	0306-4565
DOI	https://doi.org/10.1016/j.jtherbio.2004.08.047
Status	Udgivet - 2004

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title = "Heat induced fatigue and changes of the EEG is not related to reduced perfusion of the brain during prolonged exercise in humans",

abstract = "(1) Exercise-induced hyperthermia is associated with a gradual slowing of the electroencephalogram (EEG), an increase in perceived exertion (RPE) and a lowering of the cerebral perfusion. (2) During exercise EEG changes were linearly correlated to core temperature (r 2=0.67; P<0.05) and RPE (r 2 =0.54, P<0.05), but manipulation of cerebral perfusion by voluntary breathing efforts and by CO 2 inhalation did not alter RPE or EEG. (3) In conclusion EEG changes with hyperthermic exercise are not a simple effect of the reduced cerebral perfusion but may relate to the fatigue that arises concomitantly with the increases in core and brain temperatures.",

keywords = "Cerebral blood flow, Core temperature, Electroencephalogram, Exercise, Fatigue, Hyperthermia, Perceived exertion",

author = "P Rasmussen and Henrik Stie and Lars Nybo and Bodil Nielsen",

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doi = "10.1016/j.jtherbio.2004.08.047",

language = "English",

volume = "29",

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journal = "Journal of Thermal Biology",

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TY - JOUR

T1 - Heat induced fatigue and changes of the EEG is not related to reduced perfusion of the brain during prolonged exercise in humans

AU - Rasmussen, P

AU - Stie, Henrik

AU - Nybo, Lars

AU - Nielsen, Bodil

N1 - CURIS 2004 5200 273

PY - 2004

Y1 - 2004

N2 - (1) Exercise-induced hyperthermia is associated with a gradual slowing of the electroencephalogram (EEG), an increase in perceived exertion (RPE) and a lowering of the cerebral perfusion. (2) During exercise EEG changes were linearly correlated to core temperature (r 2=0.67; P<0.05) and RPE (r 2 =0.54, P<0.05), but manipulation of cerebral perfusion by voluntary breathing efforts and by CO 2 inhalation did not alter RPE or EEG. (3) In conclusion EEG changes with hyperthermic exercise are not a simple effect of the reduced cerebral perfusion but may relate to the fatigue that arises concomitantly with the increases in core and brain temperatures.

AB - (1) Exercise-induced hyperthermia is associated with a gradual slowing of the electroencephalogram (EEG), an increase in perceived exertion (RPE) and a lowering of the cerebral perfusion. (2) During exercise EEG changes were linearly correlated to core temperature (r 2=0.67; P<0.05) and RPE (r 2 =0.54, P<0.05), but manipulation of cerebral perfusion by voluntary breathing efforts and by CO 2 inhalation did not alter RPE or EEG. (3) In conclusion EEG changes with hyperthermic exercise are not a simple effect of the reduced cerebral perfusion but may relate to the fatigue that arises concomitantly with the increases in core and brain temperatures.

KW - Cerebral blood flow

KW - Core temperature

KW - Electroencephalogram

KW - Exercise

KW - Fatigue

KW - Hyperthermia

KW - Perceived exertion

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U2 - 10.1016/j.jtherbio.2004.08.047

DO - 10.1016/j.jtherbio.2004.08.047

M3 - Journal article

AN - SCOPUS:4744361127

SN - 0306-4565

VL - 29

SP - 731

EP - 737

JO - Journal of Thermal Biology

JF - Journal of Thermal Biology

IS - 7-8

ER -

Heat induced fatigue and changes of the EEG is not related to reduced perfusion of the brain during prolonged exercise in humans

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