Results 21 to 30 of about 2,195,113 (203)

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

Heart rate recovery after exercise: relations to heart rate variability and complexity

open access: yesBrazilian Journal of Medical and Biological Research, 2002
Physical exercise is associated with parasympathetic withdrawal and increased sympathetic activity resulting in heart rate increase. The rate of post-exercise cardiodeceleration is used as an index of cardiac vagal reactivation.
M. Javorka   +3 more
doaj   +1 more source

MENTAL STATUS AND HEART RATE VARIABILITY [PDF]

open access: yes, 2008
The results let us suppose that there are at least three periodical phenomena of HRV in frequency range related with mental status. Two of them have not been discovered and physiologically explained yet.
Mukhin, Dr Valery
core   +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

A pilot study of patch Holter electrocardiograph recordings in healthy cats [PDF]

open access: yesOpen Veterinary Journal, 2022
Background: A patch Holter electrocardiograph (P-Holter) is cordless, making it lightweight unlike the conventional Holter electrocardiograph (C-Holter). A P-Holter can also take continuous measurements. For up to 14 days without replacing the battery or
Mizuki Ogawa   +5 more
doaj   +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

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

Implantation of subcutaneous heart rate data loggers in southern elephant seals (Mirounga leonina) [PDF]

open access: yes, 2017
Unlike most phocid species (Phocidae), Mirounga leonina (southern elephant seals) experience a catastrophic moult where they not only replace their hair but also their epidermis when ashore for approximately 1 month.
Ancel, André   +7 more
core   +3 more sources

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

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