Resting sympathetic baroreflex sensitivity in subjects with low and high tolerance to central hypovolemia induced by lower body negative pressure [PDF]
, 2014 Central hypovolemia elicited by orthostasis or hemorrhage triggers sympathetically-mediated baroreflex responses to maintain organ perfusion; these reflexes are less sensitive in patients with orthostatic intolerance, and during conditions of severe ...
Carmen Hinojosa-Laborde +3 more
core +2 more sources
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
Experimental Physiology, EarlyView.Abstract Exercise maintains brain health and reduces the risk of cerebrovascular diseases, such as stroke and dementia. The benefits of different ‘modalities’ of exercise on male and female cerebral autoregulation are unclear. In this study, we compared adaptations in dynamic cerebral autoregulation (dCA) during spontaneous and forced oscillations in ...
Hannah J. Thomas +5 more
wiley +1 more source
Cerebrovascular regulation during heat stress
Experimental Physiology, EarlyView.Abstract Given that the brain is a highly metabolic organ and is enclosed by the skull, effective regulation of cerebral blood flow (CBF), not only for oxygen and nutrients supply but also as a means of convective heat exchange, is critical for preventing excessive elevations in brain temperature.
Kanoko Ito, Manabu Shibasaki
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
Predictions of cardiovascular responses during STS reentry using mathematical models [PDF]
The physiological adaptation to weightless exposure includes cardiovascular deconditioning arising in part from a loss of total circulating blood volume and resulting in a reduction of orthostatic tolerance.
Leonard, J. I., Srinivasan, R.
core +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
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
Cardiovascular Health in Women—Across the Lifespan
Clinical Endocrinology, Volume 104, Issue 6, Page 539-555, June 2026.ABSTRACT Cardiovascular disease (CVD) remains the leading cause of mortality and morbidity among women worldwide. However, CVD continues to be perceived as a predominantly male issue. CVD in women therefore remains understudied, underrecognized and undertreated.
Jaya Chandrasekhar +5 more
wiley +1 more source
Adaptation to prolonged bedrest in man: A compendium of research [PDF]
A compilation of major studies that describe the clinical observations and elucidate the physiological mechanisms of the adaptive process of man undergoing prolonged bed rest is presented.
Dorchak, K. J. +3 more
core +1 more source