Results 131 to 140 of about 1,226 (208)

Acute cardiovascular changes following heat exposure during simulated shipboard firefighting

Experimental Physiology, EarlyView.
Abstract Like structural firefighting, shipboard firefighting requires extreme exertion. However, shipboard firefighting may be a unique cardiovascular stress as most sailors lack extensive firefighting experience and may complete significant work before reaching the fire scene.
Daniel K. Sweet, Elizabeth M. Lavoie, Hayden W. Hess, Stuart Inglis, Brian Monaco, J. Luke Pryor, Steven E. Reis, David Hostler   +7 more
wiley   +1 more source

Sex differences in cerebral blood flow and cardiac function in response to exercise in the heat

Experimental Physiology, EarlyView.
Abstract We investigated the effect of exercising in hot conditions on cerebral blood flow and systolic left ventricular (LV) function in males and females, to explore sex differences. The experimental condition consisted of walking on a treadmill at 5 km/h and 2% incline, inside a heat chamber at 40°C (50% relative humidity), for 90 min.
João Carlos Locatelli, Juliene G. Costa, Kristanti W. Wigati, Jesse L. Criddle, Julie J. Collis, Xingwei Xu, Louise H. Naylor, Howard H. Carter, Shane K. Maloney, Robert A. McLaughlin, Andrew Haynes, Helen Jones, Keith George, Daniel J. Green   +13 more
wiley   +1 more source

Cardiopulmonary function in special operations forces compared to conventional infantry soldiers

Experimental Physiology, EarlyView.
Abstract Fitness is essential to military personnel in general, especially in the special operations forces (SOF), where the demanding tasks require a high level of physical fitness and mental robustness. However, little research has been done on SOF to characterise the putative underlying cardiopulmonary adaptations that distinguish them from ...
Rasmus Syberg Rasmussen, Jakob Solgaard Jensen, Iben Elmerdahl Rasmussen, Jacob Peter Hartmann, Clara Sofie Egeberg, Anna Agnes Lytzen, Klara Nielsen, Malte Lund Adamsen, Mads Fischer, Ronan M. G. Berg   +9 more
wiley   +1 more source

Effects of high‐intensity interval training on cardiac function in hypertensive and normotensive men: Effects of antihypertensive treatment

Experimental Physiology, EarlyView.
Abstract Exercise training is recommended for individuals with hypertension because it has been shown to lower blood pressure and reverse left ventricular concentric remodelling and mass. However, it is unclear how hypertensive individuals respond in comparison to normotensive individuals and to what extent medical treatment affects the outcome of ...
Mads Fischer, Jon Egelund, Matteo Fiorenza, Thomas S. Ehlers, Michael Nyberg, Jesper J. Linde, Lasse Gliemann, Thomas P. Gunnarsson, Jens Bangsbo   +8 more
wiley   +1 more source

Interpreting peripheral oxygen saturation variability in critical illness: A directional framework adjusted for hypoxia severity

Experimental Physiology, EarlyView.
Abstract Peripheral oxygen saturation (SpO2${S_{{\mathrm{p}}{{\mathrm{O}}_2}}}$) exhibits a complex pattern of fluctuations during hypoxia, which can be quantified using entropy measures. SpO2${S_{{\mathrm{p}}{{\mathrm{O}}_2}}}$ entropy analysis provides insights into dynamic physiological regulation by non‐invasively reflecting the body's capacity to ...
Shuyang Iris Feng, Tope Oyelade, Mudra Ko, Yunkai Zhang, Watjana Lilaonitkul, Thomas B. Williams, Joseph T. Costello, Ali R. Mani   +7 more
wiley   +1 more source

Echocardiography, Three-Dimensional Reconstruction [PDF]

European Heart Journal, 1996
openaire   +1 more source

Estimated exercise‐induced maximal myocardial blood flow in untrained and endurance‐trained men

Experimental Physiology, EarlyView.
Abstract The heart critically depends on a continuous supply of oxygen, provided by myocardial blood flow (MBF), but reliable quantification of MBF during maximal exercise is not feasible in humans. We measured MBF at rest and during similar absolute (150 W) and relative (70% of V̇O2max${{\dot{V}}_{{{{\mathrm{O}}}_{\mathrm{2}}}{\mathrm{max ...
Ilkka Heinonen, Kari K. Kalliokoski, Juhani Knuuti, Marko S. Laaksonen   +3 more
wiley   +1 more source

Ghrelin protects against cell death in myocardial ischaemia: Emerging role of microRNA

Experimental Physiology, EarlyView.
Abstract Acute myocardial infarction (MI) accelerates cardiomyocyte apoptosis, which underpins ventricular remodelling and dysfunction. The hormone ghrelin mitigates this remodelling, but the mechanisms remain unclear. Specific microRNAs (miRs) are key modulators and reliable biomarkers of early‐stage apoptosis.
Rajesh Katare, Jeffrey R. Erickson, Daryl O. Schwenke   +2 more
wiley   +1 more source

Strain‐based characterization of atrioventricular and left atrial remodelling in rat models of heart failure with preserved ejection fraction

Experimental Physiology, EarlyView.
Abstract Current experimental models of heart failure with preserved ejection fraction (HFpEF) lack standardized approaches for evaluating left atrial (LA) remodelling and atrioventricular (AV) coupling, leaving a critical gap in mechanistic understanding and phenotypic characterization. This study aimed to explore LA function and AV coupling status in
Qingfeng Zhang, Wenhua Li, Hongmei Zhang, Yi Wang, Lixue Yin   +4 more
wiley   +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