Results 31 to 40 of about 3,052,506 (152)

Dehydroepiandrosterone and Erectile Function: A Review [PDF]

open access: yesThe World Journal of Men's Health, 2018
To review the contemporary knowledge regarding the dehydroepiandrosterone and erectile function. Medline was reviewed for English-language journal articles spanning the time between January 1990 and December 2017, using the terms ‘erectile function ...
Ahmed I. El-Sakka
doaj   +1 more source

Capillary-Mitochondrial Oxygen Transport in Muscle: Paradigm Shifts

open access: yesFunction, 2023
When exercising humans increase their oxygen uptake (V̇O2) 20-fold above rest the numbers are staggering: Each minute the O2 transport system - lungs, cardiovascular, active muscles – transports and utilizes 161 sextillion (10 21) O2 molecules.
David C Poole, Timothy I Musch
doaj   +1 more source

Daily changes in sleep stages and associated cardiovascular parameters during pregnancy: using a wearable device

open access: yesFrontiers in Global Women's Health
ObjectiveGrowing evidence links sleep disturbances with gestational hypertension and/or preeclampsia. Most studies rely on self-reported surveys that cannot capture sleep stages as objective indicators of cardiovascular health.
Yuqing Guo   +5 more
doaj   +1 more source

Changes in central and peripheral hemodynamic parameters during blood donation

open access: yesFrontiers in Cardiovascular Medicine
BackgroundBlood donation is a common procedure, yet its acute effects on central and peripheral hemodynamics are not fully understood. This study aimed to systematically quantify immediate cardiovascular changes induced by whole blood donation in healthy
Babak Yazdani   +13 more
doaj   +1 more source

[Oscillations in the cardiovascular system--physical models for the interpretation of physiological phenomena].

open access: yesKardiologia polska, 2012
We discuss the foundations of the theory of homeostasis within the framework of modern physics. We analyse the paradigm of homeostasis, which is based on the physical assumption that the internal environment undergoes random fluctuations around a steady state equilibrium. We show how the notion of homeodynamics extends the concept of homeostasis.
Teodor, Buchner, Jan J, Żebrowski
openaire   +1 more source

The Effect of Blood Pressure Variability on Coronary Atherosclerosis Plaques

open access: yesFrontiers in Cardiovascular Medicine, 2022
Hypertension is one of the most important risk factors for coronary heart disease (CHD). The regulation of blood pressure plays a significant role in the development and prognosis of CHD.
Yue Liu   +7 more
doaj   +1 more source

Heart Rate Variability in Young Adults with Bronchial Asthma with and without Previous COVID-19 Infection: A Cross-sectional Study

open access: yesJournal of Clinical and Diagnostic Research
Introduction: Heart Rate Variability (HRV) is a validated, non invasive measure of Autonomic Nervous System (ANS) function. Both bronchial asthma and post Coronavirus Disease-2019 (COVID-19) syndrome are independently associated with autonomic ...
Gunaseelan Deivendran   +4 more
doaj   +1 more source

Hypoxia Tolerance in Teleosts: Implications of Cardiac Nitrosative Signals

open access: yesFrontiers in Physiology, 2018
Changes in environmental oxygen (O2) are naturally occurring phenomena which ectotherms have to face on. Many species exhibit a striking capacity to survive and remain active for long periods under hypoxia, even tolerating anoxia.
Alfonsina Gattuso   +3 more
doaj   +1 more source

β-Hydroxybutyrate as an epigenetic modifier: Underlying mechanisms and implications

open access: yesHeliyon, 2023
Previous studies have found that β-Hydroxybutyrate (BHB), the main component of ketone bodies, is of physiological importance as a backup energy source during starvation or induces diabetic ketoacidosis when insulin deficiency occurs. Ketogenic diets (KD)
Yanqiu He   +6 more
doaj   +1 more source

Cardiovascular Consequences of Unfair Pay [PDF]

open access: yes
This paper investigates physiological responses to perceptions of unfair pay. In a simple principal agent experiment agents produce revenue by working on a tedious task. Principals decide how this revenue is allocated between themselves and their agents.
Ingo Menrath   +3 more
core   +2 more sources

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