An Overview of Heart Rate Variability Metrics and Norms.
Fred Shaffer,Jay P. Ginsberg +1 more
TLDR
Current perspectives on the mechanisms that generate 24 h, short-term (<5 min), and ultra-short-term HRV are reviewed, and the importance of HRV, and its implications for health and performance are reviewed.Abstract:
Healthy biological systems exhibit complex patterns of variability that can be described by mathematical chaos. Heart rate variability (HRV) consists of changes in the time intervals between consecutive heartbeats called interbeat intervals (IBIs). A healthy heart is not a metronome. The oscillations of a healthy heart are complex and constantly changing, which allow the cardiovascular system to rapidly adjust to sudden physical and psychological challenges to homeostasis. This article briefly reviews current perspectives on the mechanisms that generate 24 h, short-term (~5 min), and ultra-short-term (<5 min) HRV, the importance of HRV, and its implications for health and performance. The authors provide an overview of widely-used HRV time-domain, frequency-domain, and non-linear metrics. Time-domain indices quantify the amount of HRV observed during monitoring periods that may range from ~2 min to 24 h. Frequency-domain values calculate the absolute or relative amount of signal energy within component bands. Non-linear measurements quantify the unpredictability and complexity of a series of IBIs. The authors survey published normative values for clinical, healthy, and optimal performance populations. They stress the importance of measurement context, including recording period length, subject age, and sex, on baseline HRV values. They caution that 24 h, short-term, and ultra-short-term normative values are not interchangeable. They encourage professionals to supplement published norms with findings from their own specialized populations. Finally, the authors provide an overview of HRV assessment strategies for clinical and optimal performance interventions.read more
Citations
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Classification of Drivers' Workload Using Physiological Signals in Conditional Automation.
Quentin Meteier,Marine Capallera,Simon Ruffieux,Leonardo Angelini,Omar Abou Khaled,Elena Mugellini,Marino Widmer,Andreas Sonderegger +7 more
TL;DR: In this paper, the authors evaluated the usefulness of physiological data as an indicator for workload in conditionally automated driving, and showed that a high level of drivers' mental workload can be accurately detected while driving in conditional automation based on 4-min recordings of respiration and skin conductance.
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Associations Between Colonic Motor Patterns and Autonomic Nervous System Activity Assessed by High-Resolution Manometry and Concurrent Heart Rate Variability.
Yuhong Yuan,Yuhong Yuan,M. Khawar Ali,Karen J. Mathewson,Kartik Sharma,Mahi Faiyaz,Wei Tan,Wei Tan,Sean P. Parsons,Kailai K. Zhang,Natalija Milkova,Lijun Liu,Elyanne M. Ratcliffe,David Armstrong,Louis A. Schmidt,Ji-Hong Chen,Jan D. Huizinga +16 more
TL;DR: It is shown that colonic motor patterns are associated with activity in the ANS which is reflected in autonomic measures of heart rate variability, which may serve as proxies for autonomic neural dysfunction in patients with colonic dysmotility.
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Time, frequency and information domain analysis of short-term heart rate variability before and after focal and generalized seizures in epileptic children.
Riccardo Pernice,Luca Faes,Ivan Kotiuchyi,Salvatore Stivala,Alessandro Busacca,Anton Popov,Volodymyr Kharytonov +6 more
TL;DR: Results suggest a shift of the sympatho-vagal balance towards sympathetic dominance and vagal withdrawal, noticeable just after the termination of seizure episodes and then reverted in focal epilepsy, and persistent during interictal and preictal periods in generalized epilepsy.
Journal ArticleDOI
Recovery time and heart rate variability following extreme endurance exercise in healthy women
Robert M. Gifford,Robert M. Gifford,Christopher J. Boos,Christopher J. Boos,Christopher J. Boos,Rebecca M. Reynolds,David R. Woods +6 more
TL;DR: A significant latent increase in relative parasympathetic dominance and RR interval irregularity at 15 days post prolonged arduous exercise, versus pre‐exercise baseline, is observed in a group of very fit and healthy adult women.
Journal ArticleDOI
Multiscale information storage of linear long-range correlated stochastic processes
Luca Faes,Margarida Pereira,Maria Eduarda Silva,Riccardo Pernice,Alessandro Busacca,Michal Javorka,Ana Paula Rocha +6 more
TL;DR: In this paper, a parametric approach is proposed to compute information storage across multiple timescales in stochastic processes displaying both short-term dynamics and long-range correlations (LRC).
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