Results 101 to 110 of about 7,351 (197)

Ageing attenuates regional vasoconstriction during acute lowering of upper and lower limbs

Experimental Physiology, EarlyView.
Abstract The venoarteriolar and myogenic response (VMR) is a non‐adrenergic, non‐baroreflex‐mediated mechanism that increases local vascular resistance and contributes to blood pressure (BP) regulation during orthostasis. Despite the importance of the VMR in human cardiovascular control, no information exists elucidating possible differences in the VMR
John D. Akins, Jeung‐Ki Yoo, Dan‐Dan Sun, Rosemary S. Parker, Marcus A. Urey, Steven A. Romero, Justin S. Lawley, Satyam Sarma, Wanpen Vongpatanasin, Craig G. Crandall, Qi Fu   +10 more
wiley   +1 more source

Carotid artery dissection linked to intermittent apnoeic swimming: A case–control study

Experimental Physiology, EarlyView.
Abstract Internal carotid artery (ICA) dissection is a rare and potentially devastating cause of cerebral ischaemia, initiated by an intimal tear or rupture of the vasa vasorum, that can lead to an intraluminal thrombus, vascular stenosis, occlusion, or dissecting aneurysm formation.
Damian M. Bailey, Richard G. Davies, Brenig L. Gwilym, Benjamin S. Stacey, Danny Walmsley, Michael H. Lewis, Josip Butkovic, Ivan Mumlek, Brad Perry, Zvonomir Vrselja, Shigehiko Ogoh, James A. Pawelczyk, Mohamad Bashir, Richard D. White, Ian M. Williams   +14 more
wiley   +1 more source

Nose Heat: Exploring Stress-induced Nasal Thermal Variability through Mobile Thermal Imaging

, 2019
Automatically monitoring and quantifying stress-induced thermal dynamic information in real-world settings is an extremely important but challenging problem.
Bianchi-Berthouze, Nadia, Cho, Youngjun, Holloway, Catherine, Julier, Simon, Oliveira, Manuel   +4 more
core   +1 more source

Whole‐body hot water immersion effect on cerebral haemodynamics and subsequent cerebrovascular reactivity to carbon dioxide

Experimental Physiology, EarlyView.
Abstract To test the hypothesis that hot water immersion (HWI) improves cerebrovascular function via shear‐mediated mechanisms, this study determined cerebrovascular reactivity to carbon dioxide (CVRCO2${\mathrm{CV}}{{\mathrm{R}}_{{\mathrm{C}}{{\mathrm{O}}_2}}}$) before and after 60 min of 39°C HWI and a 21°C air control (CON) in 15 healthy ...
Samuel F. Leaney, Ester Tommasini, Guto W. Hughes, Alison M. Shepherd, Nyah D. Kingdon, Justin S. Lawley, Geoff B. Coombs, Jonathan P. Moore, Samuel J. Oliver   +8 more
wiley   +1 more source

Limited musculoskeletal benefits of artificial gravity combined with cycling during bed rest: Results from the BRACE study

Experimental Physiology, EarlyView.
Abstract Prolonged exposure to microgravity, simulated via 6° head‐down tilt bed rest (HDT), induces musculoskeletal deconditioning and negatively impacts body composition. This study evaluated whether a combination of aerobic exercise with artificial gravity (AG) offers superior protection in comparison to exercise alone.
Mirko Mandić, Tommy R. Lundberg, Jean‐Pol Frippiat, Adam C. McDonnell, Igor B. Mekjavić, Marie‐Pierre Bareille, Rebecca Billette de Villemeur, Rodrigo Fernandez‐Gonzalo   +7 more
wiley   +1 more source

A Novel Real-Time Non-invasive Hemoglobin Level Detection Using Video Images from Smartphone Camera [PDF]

, 2017
Hemoglobin level detection is necessary for evaluating health condition in the human. In the laboratory setting, it is detected by shining light through a small volume of blood and using a colorimetric electronic particle counting algorithm.
Adibuzzaman, Mohammad, Ahamed, Sheikh Iqbal, Ahsan, Golam Mushih Tanimul, Chu, William, Field, Joshua, Gani, Md. O., Hasan, Md Kamrul   +6 more
core   +1 more source

Advances in cardiac devices and bioelectronics augmented with artificial intelligence

The Journal of Physiology, EarlyView.
Abstract figure legend Interfaces between the human heart, diagnostic bioelectronics, artificial intelligence, and clinical care. From left to right: Human heart and biosensor interface; representative waveforms of common diagnostic bioelectronic sensing modalities.
Charles Stark, Eric Rytkin, Andrei Alexandru Mircea, Igor R. Efimov   +3 more
wiley   +1 more source

Acute intermittent hypercapnic hypoxia augments left ventricular contractility

The Journal of Physiology, EarlyView.
Abstract figure legend Twenty‐four healthy adults were studied to determine the effects of an acute session of 40 min of intermittent hypercapnic hypoxia on cardiac performance. Cardiac function was assessed via echocardiography at rest and during graded stages of lower‐body negative pressure before and after the intervention to quantify load ...
Scott F. Thrall, Alex M. Williams, Philip J. Millar, Megan L. Lance, Brooke M. Shafer, Conan L. H. Shing, Jordan D. Bird, Christopher R. West, Glen E. Foster   +8 more
wiley   +1 more source

Development of a Dynamic Fluid Phantom - Setup and Validation for an Optical Sensor

Current Directions in Biomedical Engineering
We present a custom fluid phantom usable in the development of sensing technologies to assess the pulse wave. The phantom provides adjustable flow and pressure to an interchangeable target volume and integrates sensors to provide reference readings on ...
Hruschka David, Wiedenhoff Henri, Fleischhauer Vincent, Woyczyk Alexander, Zaunseder Sebastian   +4 more
doaj   +1 more source

Pulmonary arterial mechanoreceptors modulate exercise‐induced sympathetic activation in healthy humans during moderate‐intensity hypoxic exercise

The Journal of Physiology, EarlyView.
Abstract figure legend This randomized cross‐over trial (N = 12) addressed the hypothesis that selective reduction of pulmonary arterial pressure (i.e. manipulation of pulmonary arterial mechanoreceptor activation) during hypoxic exercise would reduce sympathetic outflow (muscle sympathetic nerve activity (MSNA)) in healthy humans.
Michiel T. Ewalts, Thomas D. Griffiths, Andrew J. M. Douglas, Elliott J. Jenkins, Guto Wyn Hughes, Craig D. Steinback, Lydia L. Simpson, Samuel J. Oliver, Mike Stembridge, Jonathan P. Moore   +9 more
wiley   +1 more source