Results 1 to 10 of about 1,661,933 (412)
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 +4 more sources
Analysis of heart rate variability [PDF]
Bangabandhu Sheikh Mujib Medical University Journal, 2016 No abstract is ...
Noorzahan Begum
doaj +4 more sources
Scaling graphs of heart rate time series in athletes demonstrate the VLF, LF and HF regions [PDF]
2006 Physiol. Meas. 27 N35-N39, 2006 Scaling analysis of heart rate time series has emerged as an useful tool for assessment of autonomic cardiac control. We investigate the heart rate time series of ten athletes (five males and five females), by applying detrended fluctuation analysis (DFA).
+10 more
arxiv +3 more sources
How random is your heart beat? [PDF]
, 2006 We measure the content of random uncorrelated noise in heart rate variability using a general method of noise level estimation using a coarse grained entropy. We show that usually - except for atrial fibrillation - the level of such noise is within 5 - 15% of the variance of the data and that the variability due to the linearly correlated processes is ...
Baselli +30 more
arxiv +4 more sources
Analysis of Heart Rate Variability and Implication of Different Factors on Heart Rate Variability
Current Cardiology Reviews, 2021 Background: The heart is the central organ of the circulatory system which maintains the flow of blood along with the transport of nutrients to different cells and tissues. A well-functioning cardiac state is a complicated mode of changeability. A healthy heart is not only about oscillation as the rhythmometer is not the same in every circumstance ...
Punit Kumar +4 more
openaire +4 more sources
Heart Rate Variability and Exceptional Longevity [PDF]
Frontiers in Physiology, 2020 Centenarians are the paradigm of human extreme longevity and healthy aging, because they have postponed, if not avoided, mayor age-related diseases. The purpose of this study was to investigate potential differences in resting heart rate variability (HRV)
Adrián Hernández-Vicente +19 more
doaj +8 more sources
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 +5 more sources
Pulse rate variability: a new biomarker, not a surrogate for heart rate variability
Journal of Physiological Anthropology, 2020 With the popularization of pulse wave signals by the spread of wearable watch devices incorporating photoplethysmography (PPG) sensors, many studies are reporting the accuracy of pulse rate variability (PRV) as a surrogate of heart rate variability (HRV).
Emi Yuda +6 more
doaj +2 more sources
Heart Rate Variability - A Historical Perspective [PDF]
Frontiers in Physiology, 2011 Heart rate variability (HRV), the beat-to-beat variation in either heart rate or the duration of the R-R interval – the heart period, has become a popular clinical and investigational tool.
George E Billman
doaj +4 more sources
Can Wearable Devices Accurately Measure Heart Rate Variability? A Systematic Review
Folia Medica, 2018 Background: A growing number of wearable devices claim to provide accurate, cheap and easily applicable heart rate variability (HRV) indices. This is mainly accomplished by using wearable photoplethysmography (PPG) and/or electrocardiography (ECG ...
Georgiou Konstantinos +5 more
doaj +2 more sources