On the persistence of a dogma in cerebrovascular physiology

When I received the latest issue of Physiology on my desk yesterday, I was pretty excited to read this particular review about physiological responses to acute exercise and training in different organs! Wow, there was even a section related to the brain ! And it was the first section !

So, I decided to bring that issue of Physiology into the gym in order to read it while exercising on the cycle ergometer…and then…boom:

“Studies in humans and animals have shown that brain blood flow remains largerly unchanged in response to acute exercise”

On top of everything, this sentence started the section related to the brain…

I was suddenly not interested in reading the remaining of that review anymore…

Have a look at these papers (and it’s far from the complete list !) about the impact of acute exercise and cerebral blood flow/cerebral blood flow velocity:

  • Jørgensen LG et al. J Appl Physiol 1992
  • Moraine JJ et al. Eur J Appl Physiol Occup Physiol 1993
  • Secher NH et al. J Appl Physiol 2008
  • Subudhi AW et al. Am J Physiol Heart Circ Physiol 2008
  • Ogoh S Med Sci Sports Exerc 2008
  • Ogoh S and Ainslie PN J Appl Physiol 2009
  • Ogoh S and Ainslie PN Exerc Sport Sci Rev 2009
  • Smith KJ et al. Respiratory Physiology & Neurobiology 2012
  • Brugniaux JV et al. J Cereb Blood Flow Metab 2014
  • Smith KJ et al. J Physiol (In press) 2014

Recent literature have shown consistent increases in cerebral blood flow in response to exercise (with exercise intensities up to around 60-70% maximal exercise).

So please, stop perpetuating this old dogma ! Especially without any nuances !

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2 thoughts on “On the persistence of a dogma in cerebrovascular physiology

    1. So you actually had a reviewer telling you that CBF doesn’t change during exercise !? Wow…

      And I have totally forgotten to include your J Physiol paper in my list ! Now it is included !

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