Results 41 to 50 of about 16,021,980 (396)

Determinants of short-period heart rate variability in the general population [PDF]

open access: yes, 2001
Decreased heart rate variability (HRV) is associated with a worse prognosis in a variety of diseases and disorders. We evaluated the determinants of short-period HRV in a random sample of 149 middle-aged men and 137 women from the general population ...
Bolte, H.-D.   +6 more
core   +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

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

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

Correlation of heart rate recovery and heart rate variability with atrial fibrillation progression

open access: yesJournal of International Medical Research, 2021
Objective To examine the combination of heart rate recovery (HRR) and heart rate variability (HRV) in predicting atrial fibrillation (AF) progression. Methods Data from patients with a first detected episode of AF who underwent treadmill exercise testing
Gwang-Seok Yoon   +8 more
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

Behaviour, heart rate, and heart rate variability in pigs exposed to novelty

open access: yesRevista Brasileira de Zootecnia, 2016
In the present study, we investigated behavioural responses and determined parameters of heart rate variability (HRV) to elucidate a relative activation of autonomic nervous system (ANS) during baseline (10 min) and in response to potentially stressful ...
Manja Zupan   +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

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

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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