Results 41 to 50 of about 16,166,191 (388)

Heart rate and heart rate variability in infants during olfactory stimulation

open access: yesAnnals of Human Biology, 2019
Background: Various plant odours have been shown to decrease heart rate and increase parasympathetic nervous activity. However, ‘innate’ autonomic responses without the influences of experience, assumptions and prejudices of odours remains unclear.
Yuko Tsunetsugu, Keita Ishibashi
doaj   +1 more source

Wrist-Based Photoplethysmography Assessment of Heart Rate and Heart Rate Variability: Validation of WHOOP

open access: yesSensors, 2021
Heart rate (HR) and HR variability (HRV) infer readiness to perform exercise in athletic populations. Technological advancements have facilitated HR and HRV quantification via photoplethysmography (PPG).
Clint R. Bellenger   +4 more
doaj   +1 more source

Heart rate variability in normal tension glaucoma

open access: yesMedicine, 2018
Primary vascular dysregulation (PVD) is believed to be a main cause of local vasospasm and impaired autoregulation as a possible contributing factor in the pathogenesis of normal tension glaucoma (NTG). Subjects with PVD respond stronger to psychological
N. Kurysheva   +2 more
semanticscholar   +1 more source

Spectro-Temporal Electrocardiogram Analysis for Noise-Robust Heart Rate and Heart Rate Variability Measurement

open access: yesIEEE Journal of Translational Engineering in Health and Medicine, 2017
The last few years has seen a proliferation of wearable electrocardiogram (ECG) devices in the market with applications in fitness tracking, patient monitoring, athletic performance assessment, stress and fatigue detection, and biometrics, to name a few.
Diana P. Tobon   +2 more
doaj   +1 more source

Fetal to Neonatal Heart Rate Transition during Normal Vaginal Deliveries: A Prospective Observational Study

open access: yesChildren, 2023
Documentation of fetal to neonatal heart rate (HR) transition is limited. The aim of the current study was to describe HR changes from one hour before to one hour after normal vaginal deliveries.
Yuda Munyaw   +6 more
doaj   +1 more source

Fitbit Charge HR Wireless Heart Rate Monitor: Validation Study Conducted Under Free-Living Conditions [PDF]

open access: yes, 2017
Background: Many modern smart watches and activity trackers feature an optical sensor that estimates the wearer’s heart rate. Recent studies have evaluated the performance of these consumer devices in the laboratory. Objective: The objective of our study
Gorny, Alexander Wilhelm   +3 more
core   +1 more source

Effect of Digoxin vs Bisoprolol for Heart Rate Control in Atrial Fibrillation on Patient-Reported Quality of Life: The RATE-AF Randomized Clinical Trial.

open access: yesJournal of the American Medical Association (JAMA), 2020
Importance There is little evidence to support selection of heart rate control therapy in patients with permanent atrial fibrillation, in particular those with coexisting heart failure. Objective To compare low-dose digoxin with bisoprolol (a β-blocker)
D. Kotecha   +16 more
semanticscholar   +1 more source

Heart rate variability in anaesthesiology – narrative review

open access: yesAnaesthesiology Intensive Therapy, 2023
Heart rate variability (HRV) is a measure that shows the variation in time between consecutive heartbeats – a physiological phenomenon controlled by the autonomic nervous system.
Magdalena Wujtewicz, Radoslaw Owczuk
doaj   +1 more source

The role of inhibitory G proteins and regulators of G protein signaling in the in vivo control of heart rate and predisposition to cardiac arrhythmias [PDF]

open access: yes, 2012
Inhibitory heterotrimeric G proteins and the control of heart rate. The activation of cell signaling pathways involving inhibitory heterotrimeric G proteins acts to slow the heart rate via modulation of ion channels.
Ang, R, Opel, A, Tinker, A
core   +1 more source

Heart Rate Variability and Coronary Artery Bypass Grafting: A Systematic Review

open access: yesReviews in Cardiovascular Medicine
Background: Coronary artery bypass grafting (CABG) is a well-established surgical procedure used to treat significant coronary artery disease. Nevertheless, unfavorable cardiovascular events and complications, including cardiac arrhythmias may be ...
Patrycja S. Matusik   +7 more
doaj   +1 more source

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