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Items: 1 to 20 of 154


Initial orthostatic hypotension and cerebral blood flow regulation: effect of α1-adrenoreceptor activity.

Lewis NC, Ainslie PN, Atkinson G, Jones H, Grant EJ, Lucas SJ.

Am J Physiol Regul Integr Comp Physiol. 2013 Jan 15;304(2):R147-54. doi: 10.1152/ajpregu.00427.2012. Epub 2012 Nov 21.


Initial orthostatic hypotension is unrelated to orthostatic tolerance in healthy young subjects.

Thomas KN, Cotter JD, Galvin SD, Williams MJ, Willie CK, Ainslie PN.

J Appl Physiol (1985). 2009 Aug;107(2):506-17. doi: 10.1152/japplphysiol.91650.2008. Epub 2009 Jun 18.


Is there diurnal variation in initial and delayed orthostatic hypotension during standing and head-up tilt?

Lewis NC, Atkinson G, Lucas SJ, Grant EJ, Jones H, Tzeng YC, Horsman H, Ainslie PN.

Chronobiol Int. 2011 Mar;28(2):135-45. doi: 10.3109/07420528.2010.536283.


The effect of time-of-day and sympathetic α1-blockade on orthostatic tolerance.

Lewis NC, Ainslie PN, Atkinson G, Jones H, Grant EJ, Lucas SJ.

Chronobiol Int. 2012 Aug;29(7):882-90. doi: 10.3109/07420528.2012.699121. Erratum in: Chronobiol Int. 2012 Oct;29(8):1151.


Slow breathing as a means to improve orthostatic tolerance: a randomized sham-controlled trial.

Lucas SJ, Lewis NC, Sikken EL, Thomas KN, Ainslie PN.

J Appl Physiol (1985). 2013 Jul 15;115(2):202-11. doi: 10.1152/japplphysiol.00128.2013. Epub 2013 May 16.


α1-Adrenergic receptor control of the cerebral vasculature in humans at rest and during exercise.

Purkayastha S, Saxena A, Eubank WL, Hoxha B, Raven PB.

Exp Physiol. 2013 Feb;98(2):451-61. doi: 10.1113/expphysiol.2012.066118. Epub 2012 Sep 28.


Dynamic regulation of middle cerebral artery blood flow velocity in aging and hypertension.

Lipsitz LA, Mukai S, Hamner J, Gagnon M, Babikian V.

Stroke. 2000 Aug;31(8):1897-903.


Impact of hypocapnia and cerebral perfusion on orthostatic tolerance.

Lewis NC, Bain AR, MacLeod DB, Wildfong KW, Smith KJ, Willie CK, Sanders ML, Numan T, Morrison SA, Foster GE, Stewart JM, Ainslie PN.

J Physiol. 2014 Dec 1;592(23):5203-19. doi: 10.1113/jphysiol.2014.280586. Epub 2014 Sep 12.


Identical pattern of cerebral hypoperfusion during different types of syncope.

Thomas KN, Galvin SD, Williams MJ, Willie CK, Ainslie PN.

J Hum Hypertens. 2010 Jul;24(7):458-66. doi: 10.1038/jhh.2009.93. Epub 2009 Dec 17.


Diurnal variation in time to presyncope and associated circulatory changes during a controlled orthostatic challenge.

Lewis NC, Atkinson G, Lucas SJ, Grant EJ, Jones H, Tzeng YC, Horsman H, Ainslie PN.

Am J Physiol Regul Integr Comp Physiol. 2010 Jul;299(1):R55-61. doi: 10.1152/ajpregu.00030.2010. Epub 2010 May 5.


Initial orthostatic hypotension at high altitude.

Thomas KN, Burgess KR, Basnyat R, Lucas SJ, Cotter JD, Fan JL, Peebles KC, Lucas RA, Ainslie PN.

High Alt Med Biol. 2010 Summer;11(2):163-7. doi: 10.1089/ham.2009.1056.


Hemodynamics and brain blood flow during posture change in younger women and postmenopausal women compared with age-matched men.

Edgell H, Robertson AD, Hughson RL.

J Appl Physiol (1985). 2012 May;112(9):1482-93. doi: 10.1152/japplphysiol.01204.2011. Epub 2012 Feb 23.


Syncope is unrelated to supine and postural hypotension following prolonged exercise.

Murrell CJ, Cotter JD, George K, Shave R, Wilson L, Thomas K, Williams MJ, Ainslie PN.

Eur J Appl Physiol. 2011 Mar;111(3):469-76. doi: 10.1007/s00421-010-1671-8. Epub 2010 Oct 1.


Sympathetic regulation of the human cerebrovascular response to carbon dioxide.

Peebles KC, Ball OG, MacRae BA, Horsman HM, Tzeng YC.

J Appl Physiol (1985). 2012 Sep 1;113(5):700-6. doi: 10.1152/japplphysiol.00614.2012. Epub 2012 Jun 28.


Influence of nocturnal and daytime sleep on initial orthostatic hypotension.

Lewis NC, Jones H, Ainslie PN, Thompson A, Marrin K, Atkinson G.

Eur J Appl Physiol. 2015 Feb;115(2):269-76. doi: 10.1007/s00421-014-3010-y. Epub 2014 Oct 4.


Cerebral blood flow velocity declines before arterial pressure in patients with orthostatic vasovagal presyncope.

Dan D, Hoag JB, Ellenbogen KA, Wood MA, Eckberg DL, Gilligan DM.

J Am Coll Cardiol. 2002 Mar 20;39(6):1039-45.


Impact of transient hypotension on regional cerebral blood flow in humans.

Lewis NC, Smith KJ, Bain AR, Wildfong KW, Numan T, Ainslie PN.

Clin Sci (Lond). 2015 Jul;129(2):169-78. doi: 10.1042/CS20140751.


Alterations in autonomic function and cerebral hemodynamics to orthostatic challenge following a mountain marathon.

Murrell C, Wilson L, Cotter JD, Lucas S, Ogoh S, George K, Ainslie PN.

J Appl Physiol (1985). 2007 Jul;103(1):88-96. Epub 2007 Mar 22.


Raised cerebrovascular resistance in idiopathic orthostatic intolerance: evidence for sympathetic vasoconstriction.

Jordan J, Shannon JR, Black BK, Paranjape SY, Barwise J, Robertson D.

Hypertension. 1998 Oct;32(4):699-704.


Mechanisms of orthostatic intolerance following very prolonged exercise.

Lucas SJ, Cotter JD, Murrell C, Wilson L, Anson JG, Gaze D, George KP, Ainslie PN.

J Appl Physiol (1985). 2008 Jul;105(1):213-25. doi: 10.1152/japplphysiol.00175.2008. Epub 2008 May 15.

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