Results 71 to 80 of about 9,883 (151)

Time-Frequency Analysis of Cardiovascular and Cardiorespiratory Interactions During Orthostatic Stress by Extended Partial Directed Coherence

Entropy, 2019
In this study, the linear method of extended partial directed coherence (ePDC) was applied to establish the temporal dynamic behavior of cardiovascular and cardiorespiratory interactions during orthostatic stress at a 70° head-up tilt (HUT) test on ...
Sonia Charleston-Villalobos, Sina Reulecke, Andreas Voss, Mahmood R. Azimi-Sadjadi, Ramón González-Camarena, Mercedes J. Gaitán-González, Jesús A. González-Hermosillo, Guadalupe Hernández-Pacheco, Steffen Schulz, Tomás Aljama-Corrales   +9 more
doaj   +1 more source

Integrative cardiovascular dose–response to graded lower‐body negative pressure

Experimental Physiology, EarlyView.
ABSTRACT Lower‐body negative pressure (LBNP) has been posited as a potential spaceflight countermeasure to counteract the physiological deconditioning related to fluid shifts in microgravity. However, open questions remain regarding the magnitude of LBNP that should be applied.
Richard S. Whittle, Nathan Keller, Eric A. Hall, Safiyya Patanam, Bonnie J. Dunbar, Ana Diaz‐Artiles   +5 more
wiley   +1 more source

A27-1 Orthostatic intolerance syndromes. Hemodynamic, autonomic and neurohormonal behaviour in a ten-minute head-up tilt evaluation [PDF]

, 2003
Jônatas Vinicius Machado de Freitas
openalex   +3 more sources

Clinical profile and cardiovascular autonomic function tests in patients with postural orthostatic tachycardia syndrome

CHRISMED Journal of Health and Research, 2019
Background: Postural orthostatic tachycardia syndrome (POTS) is an autonomic disorder characterized by the clinical symptoms of orthostatic intolerance such as light-headedness, fatigue, sweating, tremor, anxiety, palpitation, exercise intolerance, and ...
Neeraj, Suchitra Deolalikar, Aman Pannu, Jeyaraj Durai Pandian   +3 more
doaj   +1 more source

Individuals with persisting post‐concussion symptoms with physiological subtype demonstrate altered cardiovascular and autonomic responses to face cooling

Experimental Physiology, EarlyView.
Abstract Individuals with persisting post‐concussion symptoms with physiological subtype (PPCS‐P) demonstrate exercise intolerance due to exacerbation of concussion‐like symptoms during incremental exercise. We tested the hypothesis that individuals with PPCS‐P (n = 12) would have a blunted cardiac autonomic response to face cooling compared to healthy
Phillip J. Wallace, Steve Lidstone, Josh G. Nowlan, Johnathan Ljubanovich, Brandon J. McKinlay, Stephen A. Klassen, Stephen S. Cheung   +6 more
wiley   +1 more source

Epidural Spinal Cord Stimulation of Lumbosacral Networks Modulates Arterial Blood Pressure in Individuals With Spinal Cord Injury-Induced Cardiovascular Deficits

Frontiers in Physiology, 2018
Disruption of motor and autonomic pathways induced by spinal cord injury (SCI) often leads to persistent low arterial blood pressure and orthostatic intolerance.
Sevda C. Aslan, Sevda C. Aslan, Bonnie E. Legg Ditterline, Bonnie E. Legg Ditterline, Michael C. Park, Michael C. Park, Claudia A. Angeli, Claudia A. Angeli, Claudia A. Angeli, Enrico Rejc, Enrico Rejc, Yangsheng Chen, Yangsheng Chen, Alexander V. Ovechkin, Alexander V. Ovechkin, Andrei Krassioukov, Andrei Krassioukov, Andrei Krassioukov, Susan J. Harkema, Susan J. Harkema, Susan J. Harkema   +20 more
doaj   +1 more source

Effects of 12 weeks of upper‐body rowing exercise on autonomic cardiovascular control and vascular structure in spinal cord‐injured humans

Experimental Physiology, EarlyView.
Abstract Spinal cord injury (SCI) is characterized by autonomic cardiovascular dysfunction that may contribute to the three‐ to fourfold greater risk of heart disease and stroke compared to non‐injured individuals. While exercise training elicits beneficial changes in autonomic function and vascular structure in healthy individuals, it is unclear if ...
Rasmus Kopp Hansen, Rasmus Bering, Claus Graff, Stefanos Volianitis, Uffe Laessoe, Afshin Samani, Ryan Godsk Larsen   +6 more
wiley   +1 more source

Time‐course analysis of cerebral circulation and cardiorespiratory responses to acute central blood volume reduction in healthy young males

Experimental Physiology, EarlyView.
Abstract Central blood volume (CBV) reduction challenges circulatory and respiratory homeostasis, particularly during the initial compensatory phase (0–2 min), when rapid physiological adaptations occur. In this study, we examined dynamic cardiorespiratory responses to CBV reduction using lower‐body negative pressure (LBNP) in 11 healthy young males ...
Marina Feeley, Tomoki Watada, Go Ito, Ai Shimada, Toru Sawai, Hideomi Nakata, Shingo Otsuki, Tadayoshi Miyamoto   +7 more
wiley   +1 more source

The impact of healthy motion seating on lower‐limb blood flow and blood pressure response to simulated long‐haul air travel

Experimental Physiology, EarlyView.
Abstract Prolonged sitting inherent to long‐haul air travel can acutely decrease lower‐limb blood flow and increase brachial blood pressure. Healthy motion seating (HMS), which passively alters sitting interface pressure and posture, is a promising technology which may attenuate the deleterious effects of long‐haul air travel. The aim of this study was
Jane Lewis, Barry J. Mcdonnell, Mark Butlin, Edward Johnston, Amira Tairi, Thomas Griffiths, Gisele Bentley, Peter Sykes, Keeron Stone   +8 more
wiley   +1 more source

Reduced Systolic Volume: Main Pathophysiological Mechanism in Patients with Orthostatic Intolerance?

Arquivos Brasileiros de Cardiologia
Background: Orthostatic intolerance patients' pathophysiological mechanism is still obscure, contributing to the difficulty in their clinical management.
Maria Zildany P. Távora-Mehta, Niraj Mehta, Adriano Magajevski, Larissa de Oliveira, Débora Lee Smith Maluf, Letícia Concato, Eduardo Doubrawa, Márcio Rogério Ortiz, Cláudio L. Pereira da Cunha   +8 more
doaj   +1 more source