Search Results - "Gray, Kristen S"

Sympathetic chemoreflex responses in obstructive sleep apnea and effects of continuous positive airway pressure therapy by Imadojemu, Virginia A, Mawji, Zubina, Kunselman, Allen, Gray, Kristen S, Hogeman, Cynthia S, Leuenberger, Urs A

“…Sympathetic nerve activity is increased in awake and regularly breathing patients with obstructive sleep apnea (OSA). Over time, repetitive hypoxic stress…”
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Muscle sympathetic nerve activity responses to dynamic passive muscle stretch in humans by Cui, Jian, Blaha, Cheryl, Moradkhan, Raman, Gray, Kristen S., Sinoway, Lawrence I.

“…It is suggested that mechanoreceptors in muscle play an important role in the exercise pressor reflex. However, it has not been verified whether isolated…”
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Short-term intermittent hypoxia enhances sympathetic responses to continuous hypoxia in humans by Leuenberger, Urs A, Hogeman, Cynthia S, Quraishi, Sadeq, Linton-Frazier, Latoya, Gray, Kristen S

“…Penn State Heart and Vascular Institute, The Pennsylvania State University College of Medicine, The Milton S. Hershey Medical Center, Hershey, Pennsylvania…”
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Effects of intermittent hypoxia on sympathetic activity and blood pressure in humans by Leuenberger, Urs A., Brubaker, Derick, Quraishi, Sadeq, Hogeman, Cynthia S., Imadojemu, Virginia A., Gray, Kristen S.

“…Sympathetic nerve activity and arterial pressure are frequently elevated in patients with obstructive sleep apnea (OSA). The mechanisms responsible for chronic…”
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Obstructive Apnea during Sleep Is Associated with Peripheral Vasoconstriction by IMADOJEMU, VIRGINIA A, GLEESON, KEVIN, GRAY, KRISTEN S, SINOWAY, LAWRENCE I, LEUENBERGER, URS A

“…Obstructive apnea during sleep is associated with a substantial transient blood pressure elevation. The mechanism of this pressor response is unclear. In this…”
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Hypoxia augments apnea-induced peripheral vasoconstriction in humans by Leuenberger, Urs A, Hardy, J. Cullen, Herr, Michael D, Gray, Kristen S, Sinoway, Lawrence I

“…1  Division of Cardiology, The Pennsylvania State University College of Medicine, The Milton S. Hershey Medical Center, Hershey 17033; 2  Lebanon Veterans…”
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Aging and the exercise pressor reflex in humans by MARKEL, Troy A, DALEY, Joseph C, HOGEMAN, Cynthia S, HERR, Michael D, KHAN, Mazhar H, GRAY, Kristen S, KUNSELMAN, Allen R, SINOWAY, Lawrence I

“…Blood flow limitation to exercising muscles engages the muscle reflex during exercise, evoking an increase in heart rate (HR), blood pressure (BP), and muscle…”
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Effects of the ovarian cycle on sympathetic neural outflow during static exercise by Ettinger, Steven M, Silber, David H, Gray, Kristen S, Smith, Michael B, Yang, Qing X, Kunselman, Allen R, Sinoway, Lawrence I

“…1  Section of Cardiology, 2  Department of Radiology, and 3  Biostatistics Section, Department of Health Evaluation Sciences, The Pennsylvania State…”
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Hypoxia-induced vasodilation and effects of regional phentolamine in awake patients with sleep apnea by MORADKHAN, Raman, SPITNALE, Brett, MCQUILLAN, Patrick, HOGEMAN, Cynthia, GRAY, Kristen S, LEUENBERGER, Urs A

“…Obstructive sleep apnea (OSA) is associated with increased sympathetic nerve activity, endothelial dysfunction, and premature cardiovascular disease. To…”
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Erratum to “Effects of intermittent hypoxia on sympathetic activity and blood pressure in humans” [Auton. Neurosci. 121/1-2 (2005) 87–93] by Leuenberger, Urs A, Brubaker, Derick, Quraishi, Sadeq, Hogeman, Cynthia S, Imadojemu, Virginia A, Gray, Kristen S

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Ischemic exercise and the muscle metaboreflex by Cornett, Jacob A, Herr, Michael D, Gray, Kristen S, Smith, Michael B, Yang, Qing X, Sinoway, Lawrence I

“…1  Division of Cardiology, Department of Medicine, and 3  Department of Radiology, Center for Nuclear Magnetic Resonance Research, Pennsylvania State…”
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Venous but not skeletal muscle interstitial nitric oxide is increased during hypobaric hypoxia by Leuenberger, Urs A., Johnson, Douglas, Loomis, Joseph, Gray, Kristen S., MacLean, David A.

“…Systemic hypoxia leads to peripheral vasodilation that serves to counteract the decrease in peripheral oxygen (O 2 ) delivery. Skeletal muscle vasodilation…”
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Attenuated sympathetic nerve responses after 24 hours of bed rest by Khan, Mazhar H, Kunselman, Allen R, Leuenberger, Urs A, Davidson, Jr, William R, Ray, Chester A, Gray, Kristen S, Hogeman, Cynthia S, Sinoway, Lawrence I

“…Bed rest reduces orthostatic tolerance. Despite decades of study, the cause of this phenomenon remains unclear. In this report we examined hemodynamic and…”
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Effects of hindlimb contraction on pressor and muscle interstitial metabolite responses in the cat by MacLean, Dave A, LaNoue, Kathryn F, Gray, Kristen S, Sinoway, Lawrence I

“…1  Section of Cardiology and 2  Department of Cellular and Molecular Physiology, The Pennsylvania State University College of Medicine, The Milton S. Hershey…”
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Skeletal Muscle Metaboreceptor Exercise Responses Are Attenuated in Heart Failure by Sterns, David A, Ettinger, Steven M, Gray, Kristen S, Whisler, Sandra K, Mosher, Timothy J, Smith, Michael B, Sinoway, Lawrence I

“…BACKGROUNDResting sympathetic nervous system activity is increased in heart failure. Whether sympathetic nervous system responses during exercise are increased…”
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Limb congestion enhances the synchronization of sympathetic outflow with muscle contraction by Mostoufi-Moab, S, Herr, M D, Silber, D H, Gray, K S, Leuenberger, U A, Sinoway, L I

“…In this report, we examined if the synchronization of muscle sympathetic nerve activity (MSNA) with muscle contraction is enhanced by limb congestion. To…”
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Role of adenosine and nitric oxide in hypoxia‐induced skeletal muscle vasodilation in humans by Leuenberger, Urs A., Mascarenhas, Vernon, Lninton‐Frazier, Latoya, Steiner, Jill, Hogeman, Cynthia, Gray, Kristen S.

“…Abstract only In humans, systemic hypoxia evokes vasodilation in resting skeletal muscle despite significant increases in sympathetic vasoconstrictor nerve…”
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The effects of increased dietary salt on renal blood flow responses during physiological stress: Role of renin‐angiotensin system by Momen, Afsana, Blaha, Cheryl, Thomas, Karen, Gahremanpour, Amir, Gray, Kristen S., King, Nicholas, Leuenberger, Urs A., Sinoway, Lawrence I.

“…Renal sympathetic nerve activation is essential for the development of stress‐induced hypertension. High dietary salt (HDS) also contributes to the development…”
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Muscle sympathetic nerve activity responses to dynamic passive muscle stretch by Cui, Jian, Blaha, Cheryl, Moradkhan, Raman, Gray, Kristen S., Sinoway, Lawrence I.

“…It is suggested that mechanoreceptors in muscle play an important role in the exercise pressor reflex, however, it has not been verified whether isolated…”
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Influences of gender on sympathetic nerve responses to static exercise by Ettinger, S M, Silber, D H, Collins, B G, Gray, K S, Sutliff, G, Whisler, S K, McClain, J M, Smith, M B, Yang, Q X, Sinoway, L I

“…We compared reflex responses to static handgrip at 30% maximal voluntary contraction (MVC) in 26 untrained men (mean age 35 +/- 3 yr) and 23 untrained women…”
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