Results 101 to 110 of about 1,748,185 (181)

Age‐related loss of hysteresis in the spontaneous vascular sympathetic baroreflex is associated with altered neural rather than mechanical control

Experimental Physiology, EarlyView.
Abstract The vascular sympathetic baroreflex is critical for stabilising blood pressure. A notable feature of this reflex is hysteresis, a directional asymmetry in responsiveness during rising versus falling pressure that is evident in young adults but attenuated in older age.
Guto Wyn Hughes, Denis J. Wakeham, Christopher J. A. Pugh, Zoe H. Adams, Rachel N. Lord, Jonathan P. Moore   +5 more
wiley   +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

Local nature of 0.1 Hz oscillations in microcirculation is confirmed by imaging photoplethysmography

Low-frequency oscillations in the human circulatory system is important for basic physiology and practical applications in clinical medicine. Our objective was to study which mechanism (central or local) is responsible for changes in blood flow ...
Mamontov, Oleg V., Sakovskaia, Anastasiia V., Mizeva, Irina A., Kamshilin, Alexei A., Podolyan, Natalia P.   +4 more
core   +1 more source

Imaging of intranasal drug delivery to the brain

, 2020
Intranasal (IN) delivery is a rapidly developing area for therapies with great potential for the treatment of central nervous system (CNS) diseases. Moreover, in vivo imaging is becoming an important part of therapy assessment, both clinically in humans ...
Alhamami, Mosa, Yun, Yeonhee, Ruiz-Cardozo, Miguel, Miedema, Shelby B., Veronesi, Michael C., Vannier, Michael W.   +5 more
core   +1 more source

Physiological mechanisms underlying enhanced performance with blood flow restriction training: neuromuscular, vascular and metabolic adaptations

The Journal of Physiology, EarlyView.
Abstract figure legend We investigated how 6 weeks of dynamic knee‐extensor interval training with blood flow restriction (BFR‐leg) and without (CTRL‐leg) impacts performance and its mechanisms using non‐invasive methods. Specifically, we used gold‐standard methods to assess neuromuscular function, vascular function using Doppler ultrasound, and near ...
Colin Lavigne, Valentin Mons, Clément Lemineur, Oliver Meste, Georges Lefthériotis, Grégory M. Blain   +5 more
wiley   +1 more source

Role of reactive oxygen species in mediating peripheral hypoxic vasodilation and sympathoexcitation at high altitude

The Journal of Physiology, EarlyView.
Abstract figure legend High‐altitude acclimatisation increases muscle sympathetic nerve activity (MSNA) via activation of the arterial chemoreflex, pulmonary arterial baroreceptors and resetting of the sympathetic vascular baroreflex. However attempting to silence these mechanisms only partially normalises MSNA, implicating other contributory ...
Liam D. Corr, Andrew J. M. Douglas, Elliott J. Jenkins, Lauren E. Maier, Jodie L. Koep, Travis D. Gibbons, Adam Field, James D. Anholm, Katharine Foster, Zoe H. Adams, Lydia L. Simpson, Jonathan P. Moore, Tinna Traustadottir, Christoph Siebenmann, Joshua C. Tremblay, Mike Stembridge   +15 more
wiley   +1 more source

Cardiovascular reserve as an integrative physiological construct: Current evidence, emerging technologies and future directions

Clinical Physiology and Functional Imaging, Volume 46, Issue 6, November 2026.
Abstract Cardiovascular reserve represents the integrated physiological capacity of the cardiovascular system to maintain tissue perfusion during increasing physiological stress. Although reserve has long been recognized conceptually, its direct assessment remains challenging.
Uri Gabbay, Shai Fein, Michael J. Drescher   +2 more
wiley   +1 more source

Multi-wavelength imaging photoplethysmography for non-invasive and non-contact assessment of burn severity

Scientific Reports
We report a non-contact burn severity assessment system using the image-based photoplethysmography (IPPG) technique by fabricating a multi-wavelength imaging system.
You-rim Park, Joo Beom Eom
doaj   +1 more source

Wearable Technologies and Artificial Intelligence in Sports Medicine: A Systematic Narrative Review of Injury Prevention and Rehabilitation

Health Science Reports, Volume 9, Issue 10, October 2026.
ABSTRACT Background and Aims Wearable technologies and artificial intelligence (AI) are shifting sports medicine from episodic, subjective assessment toward continuous, data‐driven injury surveillance. This review aimed to map the main wearable sensor modalities used in injury prevention and rehabilitation, evaluate AI architectures applied to ...
Margarida Silva, Saif Al‐jumaili, Mário Lopes, Carlos Albuquerque, António D. Reis, Paulo Jorge Coelho, Ivan Miguel Pires   +6 more
wiley   +1 more source

TRACC‐PHYSIO: Time‐Domain Resolution‐Aligned Cross‐Correlation to Estimate PHYSIOlogical Coupling and Time Delays in Dynamic MRI

Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 1605-1616, October 2026.
ABSTRACT Purpose To validate a method to assess cardiac and respiratory brain pulsations in slowly sampled dynamic MR scans. Cardiac and respiratory pulsations are key drivers of neurofluid circulation. However, resolving their temporal dynamics requires fast imaging, which is not achievable in many dynamic MR acquisitions.
Adam M. Wright, Jianing Zhang, Yunjie Tong, Qiuting Wen   +3 more
wiley   +1 more source