Results 91 to 100 of about 1,788,349 (198)

Understanding the neural baroreflex: Pulsatility, baroreflex sensitivity and system identification - experimentation and analysis [PDF]

, 2023
Blood pressure is a dynamic measurement that continuously changes based on a variety of physiological needs. Adequate blood pressure is crucial for a variety of reasons, such as organ perfusion, oxygen circulation, and the excretion of harmful toxins.
Bagnall Hare, Hasana
core  

Mechanisms reducing parasympathetic activity in chronic hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Parasympathetic activity is reduced in chronic hypoxia, but the underlying mechanism(s) are unclear. Using β‐adrenergic blockade to isolate parasympathetic control of heart rate at sea level and after 9‐12 days at high altitude, we investigated whether (i) chemoreflex activation, (ii) increased pulmonary ventilation and/or (iii ...
Lauren E. Maier, Andrew Douglas, Katharine Foster, Elliott J. Jenkins, Liam D. Corr, Peter Rasmussen, James Anholm, Travis D. Gibbons, Phil N. Ainslie, Mike Stembridge, Christoph Siebenmann   +10 more
wiley   +1 more source

Load influence on baroreflex sensitivity

, 2009
The topic of my Bachelor thesis is focused on through acquaintance problems of load influence on baroreflex sensitivity, to creat measuring protocol and implementation of this measurement. In this project, I examined how baroreceptors and then baroreflex
Szöllösi, Tomáš
core  

Thoracic impedance variables and baroreflex sensitivity (mean ± SD) of participants.

, 2018
Thoracic impedance variables and baroreflex sensitivity (mean ± SD) of participants.
Uwe Lang (399930), Helmut Karl Lackner (399929), Vassiliki Kolovetsiou-Kreiner (399931), Manfred Georg Moertl (399928), Dietmar Schlembach (399932), Mila Cervar-Zivkovic (562311), Ilona Papousek (320667), Karin Schmid-Zalaudek (4526839)   +7 more
core   +1 more source

The influence of metaboreflex activation on pulmonary pressure with combined chemoreflex activation in acute and chronic hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Activation of both the metaboreflex via post‐exercise circulatory occlusion and the chemoreflex via acute and chronic hypoxia increased pulmonary artery systolic pressure. Coactivation of these reflexes further increased pulmonary artery pressure in an additive manner.
Lauren E. Maier, Elliott J. Jenkins, Andrew Douglas, Jack Talbot, Alexandra Williams, Jonathan Moore, Craig D. Steinback, Liam D. Corr, Zoe H. Adams, Fabio Giuseppe Laginestra, Markus Amann, Philip N. Ainslie, Travis D. Gibbons, Mike Stembridge   +13 more
wiley   +1 more source

Coordinated regulation of PIEZO2 by alternative splicing, post‐translational modification, membrane trafficking and protein partners

The Journal of Physiology, EarlyView.
Abstract figure legend Regulatory mechanisms such as alternative splicing, post‐translational modification, membrane trafficking, and protein interactions control channel gating, membrane abundance, and overall activity of PIEZO2. Proper regulation supports PIEZO2‐dependent proprioceptive, somatosensory, nociceptive, pruriceptive and interoceptive ...
Eunice I. Oribamise, Qinglu Li, Mary G. Garry   +2 more
wiley   +1 more source

Assessment of spontaneous baroreflex sensitivity in neonates

, 1997
Aims—To determine whether it is possible to assess baroreflex sensitivity in neonates by studying only spontaneous variations in systolic blood pressure and heart rate.
Emmanuel Drouin, Jean Calamel, Véronique Gournay, Alain Mouzard, Jean-christophe Rozé   +4 more
core  

The role of group III/IV afferent feedback in the ventilatory, pressor and metabolic responses to exercise in normoxia and hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Participants completed cycling exercise with (placebo) and without (25 µg intrathecal fentanyl) intact group III/IV muscle afferent feedback in three settings: normoxia, acute hypoxia and chronic hypoxia after 7–9 days of acclimatisation (∼3800 m). Blocking afferent feedback suppressed exercise hyperpnoea across all environments,
Elliott J. Jenkins, Phuong L. Ha, Connor A. Howe, Jay M. J. R. Carr, Justin A. Monteleone, Andrew J. M. Douglas, Abigail Nicholson, Andrew Steele, Brydie Lemkes, Jodie L. Koep, L. Madden Brewster, Jennifer Duffy, Mathew I. B. Debenham, Tena Monaghan, Declan Isaak, Jacob McCormick, Brian H. Dalton, Chris J. McNeil, Jared Baylis, David MacLeod, Mike Stembridge, Markus Amann, Philip N. Ainslie, Travis D. Gibbons   +23 more
wiley   +1 more source

The heart responds to pressure via the lung: Dive depth alters cardiac control in bottlenose dolphins

The Journal of Physiology, EarlyView.
Abstract figure legend Dive depth independently modulated cardiac regulation in bottlenose dolphins during controlled voluntary dives. Dolphins performed dives to 0.5, 5 and 10 m with standardized dive durations, allowing the effects of depth on cardiovascular responses to be evaluated.
F. Cunha Oliveira, N. Pelufo Martínez, K. Aoki, J. Altimiras, L. Moñino, A. G. Torrente, A. Fahlman   +6 more
wiley   +1 more source

P2X3 receptor antagonism improves hindlimb blood flow during exercise in a conscious ovine model of hypertensive heart failure with preserved ejection fraction

The Journal of Physiology, EarlyView.
Abstract figure legend A preclinical large‐animal model of hypertensive heart failure with preserved ejection fraction (HFpEF) was used to examine the role of purinergic P2X3 receptor signalling during treadmill exercise. Animals were instrumented with either thoracic cardiac output and coronary flow probes or abdominal renal and hindlimb blood flow ...
Mridula Pachen, Siyi Chen, Joshua W.‐H. Chang, Audrys Pauza, Julia Shanks, Bindu George, Julian Paton, Rohit Ramchandra   +7 more
wiley   +1 more source