Results 121 to 130 of about 25,281 (243)

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

Evaluation Model of Microhemodynamics in Finger Skin at Arterial Occlusion and Post-Occlusive Hyperemia

Fluids
The development of optical noninvasive methods for assessing the functional state of peripheral vessels, including the microcirculatory vascular bed, requires advances in modeling peripheral hemodynamics in order to interpret diagnostic data in terms of ...
Andrey P. Tarasov, Vasily N. Karpov, Dmitry A. Rogatkin   +2 more
doaj   +1 more source

CARE‐ing for concussions: Development of the Calgary Adapted aRm Ergometer (CARE) exertion test: A physiological alternative to the Calgary Concussion Cycle Test

Experimental Physiology, EarlyView.
Abstract Aerobic exercise testing helps facilitate recovery post‐concussion. Current protocols (Calgary Concussion Cycling Test: CCCT) are inaccessible for athletes with lower‐body impairments (i.e. Para athletes). This study compared physiological parameters for a novel arm crank test, the Calgary Adapted aRm Ergometer (CARE) test, with the CCCT ...
Jonathan D. Smirl, Joshua J. Burkart, Matthew G. Neill, Jean‐Michel Galarneau, Elizabeth K. S. Fletcher, Joel S. Burma, Nathan E. Johnson, John J. Leddy, Mohammad N. Haider, William M. Adams, Cheri Blauwet, Chantel T. Debert, Carolyn A. Emery   +12 more
wiley   +1 more source

Noninvasive Assessment of Arterial Stiffness Using Photoplethysmography: Feature Analysis and Machine Learning-Based Estimation of Carotid-Femoral Pulse Wave Velocity

IEEE Access
Cardiovascular diseases are the leading cause of mortality worldwide, underscoring the need for accessible, noninvasive risk assessment. Arterial stiffness, a hallmark of vascular aging, is an established independent predictor of cardiovascular events ...
Kiana Pilevar Abrisham, Khalil Alipour, Bahram Tarvirdizadeh, Mohammad Ghamari   +3 more
doaj   +1 more source

Passive hyperthermia increases blood circulation in specific regions, largely independent of conduit artery mechanics and cardiac performance

Experimental Physiology, EarlyView.
Abstract Passive hyperthermia increases net peripheral and systemic blood flow in humans and other animals, yet the underlying haemodynamic forces that selectively accelerate blood movement remain incompletely characterized. Wave intensity analysis offers insight into the respective contributions of the heart and the vascular system to changes in blood
Nuno Koch Esteves, Kazuhito Watanabe, Francesca R. Cavallo, Ashraf W. Khir, José González‐Alonso   +4 more
wiley   +1 more source

Validity of resting heart rate derived from contact-based smartphone photoplethysmography compared with electrocardiography: a scoping review and checklist for optimal acquisition and reporting

Frontiers in Digital Health
BackgroundWith the rise of smartphone ownership and increasing evidence to support the suitability of smartphone usage in healthcare, the light source and smartphone camera could be utilized to perform photoplethysmography (PPG) for the assessment of ...
James D. Mather, Lawrence D. Hayes, Jacqueline L. Mair, Jacqueline L. Mair, Nicholas F. Sculthorpe   +4 more
doaj   +1 more source

Identification of the individual cardiac contraction threshold during high‐frame‐rate stress echocardiography

Experimental Physiology, EarlyView.
Abstract The clinical assessment of cardiovascular function during exercise using stress echocardiography is essential for accurate cardiac diagnosis. However, normal limitations of cardiac deformation responses to increasing physical exertion remain poorly understood.
Fabian Spahiu, Max Hagemann, Michelle Ottlik, Moritz Lampkemeyer, Eric J. Stöhr   +4 more
wiley   +1 more source

Evaluation of Photoplethysmography-Based Monitoring of Respiration Rate During High-Intensity Interval Training: Implications for Healthcare Monitoring

Biosensors
Monitoring respiration rate (RR) is crucial in various healthcare settings, particularly during demanding (physical) activities where respiratory dynamics are critical indicators of health status.
Marjolein Muller, Kambiz Ebrahimkheil, Tara Vijgeboom, Casper van Eijck, Eelko Ronner   +4 more
doaj   +1 more source

Pulmonary arterial mechanoreceptors mediate sustained sympathoexcitation during high altitude hypoxia in humans

Experimental Physiology, EarlyView.
Abstract Sympathetic nervous system activation is a hallmark of high‐altitude hypoxia, yet the afferent mechanisms remain incompletely defined. We examined the relative contributions of pulmonary arterial mechanoreceptors and carotid chemoreceptors – two excitatory pathways co‐activated by hypoxia – to sustained sympathoexcitation at altitude.
Michiel T. Ewalts, Lydia L. Simpson, Jack S. Talbot, Elliott J. Jenkins, Travis D. Gibbons, Connor A. Howe, Lauren E. Maier, Emily R. Vanden Berg, Alex M. Williams, Philip N. Ainslie, Samuel J. Oliver, Craig D. Steinback, Mike Stembridge, Jonathan P. Moore   +13 more
wiley   +1 more source

New device for assessing the toe-brachial index and a pilot cross-sectional study in diabetic patients

Jornal Vascular Brasileiro
Background Blood pressure measurements in the hallux and fingers are important in evaluation of patients with diabetes, obese patients, dialysis patients, and those with peripheral artery disease.
Thiago Paes de Barros De Luccia, Alexandre Donisete Bensi, Nelson De Luccia, Priscilla Matos Cunha, Lia Maristela da Silva Jacob, Leonardo Servato Sanches Martins de Barros, Julio Maganha Gouvêa, Vívian Mei Matuoka   +7 more
doaj   +1 more source