Phenylephrine decreases frontal lobe oxygenation at rest but not during moderately intense exercise

Whether sympathetic activity influences cerebral blood flow (CBF) and oxygenation remains controversial. The influence of sympathetic activity on CBF and oxygenation was evaluated by the effect of phenylephrine on middle cerebral artery (MCA) mean flow velocity (Vmean) and the near-infrared spectros...

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Veröffentlicht in:	Journal of applied physiology (1985) 2010-06, Vol.108 (6), p.1472-1478
Hauptverfasser:	BRASSARD, Patrice, SEIFERT, Thomas, WISSENBERG, Mads, JENSEN, Peter M, HANSEN, Christian K, SECHER, Niels H
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Blood Blood Flow Velocity - drug effects Blood Flow Velocity - physiology Blood vessels Brain Cerebrovascular Circulation - drug effects Cerebrovascular Circulation - physiology Exercise Frontal Lobe - drug effects Frontal Lobe - physiology Fundamental and applied biological sciences. Psychology Heart rate Humans Male Oxygen - metabolism Oxygen Consumption - drug effects Oxygen Consumption - physiology Phenylephrine - administration & dosage Physical Exertion - drug effects Physical Exertion - physiology Vasoconstrictor Agents - administration & dosage Young Adult
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