Results 21 to 30 of about 1,485,561 (395)
A comprehensive accuracy assessment of Samsung smartwatch heart rate and heart rate variability
medRxiv, 2022 Background Photoplethysmography (PPG) is a low-cost and easy-to-implement method to measure vital signs, including heart rate (HR) and heart rate variability (HRV). The method is widely used in various wearable devices.
Fatemeh Sarhaddi +7 more
semanticscholar +1 more source
Variability in heart rate recovery measurements over 1 year in healthy, middle-aged adults. [PDF]
, 2014 This study assessed the longer-term (12-month) variability in post-exercise heart rate recovery following a submaximal exercise test. Longitudinal data was analysed for 97 healthy middle-aged adults (74 male, 23 female) from 2 occasions, 12 months apart.
Carroll, S, Ingle, L, Mellis, MG
core +1 more source
Frontiers in Neuroscience, 2018 Background: Individuals who treat trauma are at significant risk of vicarious traumatization and burnout. Somatic Experiencing® (SE®) is a resiliency-focused trauma treatment modality designed to address autonomic nervous system (ANS) dysregulation and ...
Neal E. Winblad +2 more
doaj +1 more source
Heart rate variability predicts older adults’ avoidance of negativity [PDF]
, 2018 Objectives The ability to produce situation-appropriate cognitive and emotional responses is dependent on autonomic nervous system (ANS) functionality.
Mantantzis, Konstantinos +2 more
core +1 more source
Clinical Cardiology, 1990 AbstractReduced heart rate variability carries an adverse prognosis in patients who have survived an acute myocardial infarction. This article reviews the physiology, technical problems of assessment, and clinical relevance of heart rate variability.
M, Malik, A J, Camm
openaire +2 more sources
Heart rate variability in male rats
Physiological Reports, 2023 The cardiovascular system is primarily controlled by the autonomic nervous system, and any changes in sympathetic or parasympathetic activity also have an impact on myocardial activity.
Pavol Švorc Jr +2 more
doaj +1 more source
Frontiers in Psychology, 2017 Psychophysiological research integrating heart rate variability (HRV) has increased during the last two decades, particularly given the fact that HRV is able to index cardiac vagal tone.
S. Laborde, E. Mosley, J. Thayer
semanticscholar +1 more source
RapidHRV: an open-source toolbox for extracting heart rate and heart rate variability [PDF]
PeerJ, 2022 Heart rate and heart rate variability have enabled insight into a myriad of psychophysiological phenomena. There is now an influx of research attempting using these metrics within both laboratory settings (typically derived through electrocardiography or
Peter A. Kirk +3 more
doaj +2 more sources
Heart-Rate Variability—More than Heart Beats?
Frontiers in Public Health, 2017 Heart-rate variability (HRV) is frequently introduced as mirroring imbalances within the autonomous nerve system. Many investigations are based on the paradigm that increased sympathetic tone is associated with decreased parasympathetic tone and vice ...
Gernot Ernst
doaj +1 more source
Assessment of fetal heart rate variability and velocity variability by Doppler velocimetry of the descending aorta at 10-20 weeks of gestation [PDF]
, 1999 Objectives: Determination of gestational age-related modulations in fetal heart rate and descending aorta blood flow velocity in the early human fetus and comparison of aortic variability data with data obtained from the umbilical artery.
Clark, E.B. +4 more
core +7 more sources