Results 81 to 90 of about 16,320 (239)
The effect of bedrest on various parameters of physiological function. Part XIII - A review of possible mechanisms of orthostatic intolerance to passive tilt [PDF]
Possible mechanisms of orthostatic intolerance to passive tilt - bed rest and water immersion effects on various parameters of physiological ...
Cardus, D. +3 more
core +1 more source
Investigation of in vivo measurement of cerebral cytochrome-c-oxidase redox changes using near-infrared spectroscopy in patients with orthostatic hypotension [PDF]
, 2007 We have previously used a continuous four wavelength near infrared spectrometer to measure changes in the cerebral concentrations of oxy- (Δ[HbO2] and deoxy- haemoglobin (Δ[HHb]) during head-up tilt in patients with primary autonomic failure.
Cooper, C.E. +6 more
core
Blood pressure regulation V: in vivo mechanical properties of precapillary vessels as affected by long-term pressure loading and unloading [PDF]
, 2013 Recent studies are reviewed, concerning the in vivo wall stiffness of arteries and arterioles in healthy humans, and how these properties adapt to iterative increments or sustained reductions in local intravascular pressure.
Igor B. Mekjavic +2 more
core +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
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 +6 more
wiley +1 more source
Heart rate variability analysis in postural orthostatic tachycardia syndrome: a case report
Heart International, 2006 The authors present a case of 36 year old male patient with idiopathic postural orthostatic tachycardia syndrome (POTS) diagnosed during head-up tilt testing.
Raffaele Calabrò +6 more
doaj +1 more source
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 +6 more
wiley +1 more source
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 +9 more
doaj +1 more source
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 +7 more
wiley +1 more source