Cerebrovascular Circulation

The effect of consistent practice of yogic breathing exercises on the human cardiorespiratory system
Joshua A A McKay, Cara L McCulloch, Jordan S Querido, Glen E Foster, Michael S Koehle, A William Sheel
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Role of CO2 in the cerebral hyperemic response to incremental normoxic and hyperoxic exercise.
Cerebral blood flow (CBF) is temporally related to exercise-induced changes in partial pressure of end-tidal carbon dioxide (PetCO2 ); …
Kurt J Smith, K W Wildfong, R L Hoiland, M Harper, N C Lewis, A Pool, S L Smith, T Kuca, G E Foster, P N Ainslie
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Comparing and characterizing transient and steady-state tests of the peripheral chemoreflex in humans
Jamie R Pfoh, Michael M Tymko, Maria Abrosimova, Lindsey M Boulet, Glen E Foster, Anthony R Bain, Philip N Ainslie, Craig D Steinback, Christina D Bruce, Trevor A Day
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Measuring the human ventilatory and cerebral blood flow response to CO$_textrm2$: a technical consideration for the end-tidal-to-arterial gas gradient
Michael M Tymko, Ryan L Hoiland, Tomas Kuca, Lindsey M Boulet, Joshua C Tremblay, Bryenna K Pinske, Alexandra M Williams, Glen E Foster
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The contribution of arterial blood gases in cerebral blood flow regulation and fuel utilization in man at high altitude.
The effects of partial acclimatization to high altitude (HA; 5,050 m) on cerebral metabolism and cerebrovascular function have not been …
Christopher K Willie, David B MacLeod, Kurt J Smith, Nia C Lewis, Glen E Foster, Keita Ikeda, Ryan L Hoiland, Philip N Ainslie
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Impact of hypocapnia and cerebral perfusion on orthostatic tolerance.
We examined two novel hypotheses: (1) that orthostatic tolerance (OT) would be prolonged when hyperventilatory-induced hypocapnia (and …
Nia C S Lewis, Anthony R Bain, David B MacLeod, Kevin W Wildfong, Kurt J Smith, Christopher K Willie, Marit L Sanders, Tianne Numan, Shawnda A Morrison, Glen E Foster, Julian M Stewart, Philip N Ainslie
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Regional changes in brain blood flow during severe passive hyperthermia; the effects of PaCO2 and extra-cranial blood flow.
We investigated; 1) the regional distribution of cerebral blood flow (CBF), 2) the influence of end-tidal PCO2 (PETCO2) on CBF, and 3) …
Anthony Richard Bain, Kurt J Smith, Nia C Lewis, Glen Edward Foster, Kevin W Wildfong, Christopher K Willie, Geoffrey L Hartley, Stephen S Cheung, Philip N Ainslie
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Dynamic cerebral autoregulation during and following acute hypoxia: role of carbon dioxide.
Previous research has shown an inconsistent effect of hypoxia on dynamic cerebral autoregulation (dCA), which may be explained by …
Jordan S Querido, Philip N Ainslie, Glen E Foster, William R Henderson, John R Halliwill, Najib T Ayas, A William Sheel
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High on altitude: new attitudes toward human cerebral blood flow regulation and altitude acclimatization
Glen E. Foster
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Intermittent hypoxia increases arterial blood pressure in humans through a Renin-Angiotensin system-dependent mechanism.
Intermittent hypoxia (IH) is believed to contribute to the pathogenesis of hypertension in obstructive sleep apnea through mechanisms …
Glen E Foster, Patrick J Hanly, Sofia B Ahmed, Andrew E Beaudin, Vincent Pialoux, Marc J Poulin
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