View Full Version : What happens to cerebral blood flow during exercise?

07-23-2005, 10:35 PM
What happens to cerebral blood flow during exercise?what is the mechanism?
Your opinion appriciated.

07-27-2005, 09:45 AM
The cerebral bl flow is totally autoregulated,so it should not change unless the PCO2 changes.

08-31-2005, 03:25 AM
It's true that cerebral blood flow is autoregulated, and one of the components of autoregulation is that active areas of the brain have vasodilatation in order to increase blood flow (which means efficient getting rid of CO2 and getting O2 for active neurons). So, in exercise, to my opinion, it would be vasodilatation especially in motor areas.

01-15-2006, 03:05 AM
the cerebral blood flow depends on arterial pco2....in exercise there is little change in arterial pco2.....so ans is no change

03-19-2006, 03:10 PM
During Exercise Total Blood flow to the brain remains constant. Regional distribution changes to the motor areas based on metabolic vasoregulation regulated by [PCO2] while inactive areas have flow decreased by increasing resistance.

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