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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Proceedings ArticleDOI
Heart Rate Variability Extraction using Commodity Wi-Fi Devices via Time Domain Signal Processing
Itsuki Shirakami,Takashi Sato +1 more
TL;DR: In this article, the authors proposed a time domain method to estimate heart rate variability (HRV) using commodity Wi-Fi devices, which combines two techniques: denoising by CSI quotient model, and signal selection based on a standard deviation of NN intervals (SDNN) and averaging.
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Non-linear heart rate dynamics during and after three controlled exercise intensities in healthy men.
TL;DR: In this paper, the complexity and fractal nature of heartbeat during constant exercise, at three different intensities, and recovery, was analyzed, and the authors concluded that exercise produces a loss of heartbeat complexity, but not fractal complexity, during recovery and it depends on intensity.
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Social anxiety symptoms, heart rate variability, and vocal emotion recognition in women: evidence for parasympathetically-mediated positivity bias.
TL;DR: A parasympathetically-mediated positivity bias may indicate or facilitate normal social functioning in women, and HRV during a symptom- or disorder-relevant task may predict task performance and reveal parASYmpathetic differences that are not found at baseline.
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Diaphragmatic Function in Cardiovascular Disease: JACC Review Topic of the Week.
Husam M. Salah,Lee R. Goldberg,Jeroen Molinger,G. Michael Felker,Willard N. Applefeld,Tienush Rassaf,Ryan J. Tedford,Michael A. Mirro,John G.F. Cleland,Marat Fudim +9 more
TL;DR: In this article , the authors proposed that targeting the diaphragm in patients with heart failure via inspiratory muscle training or device-based stimulation can provide a novel treatment pathway for heart failure.
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Assessment of a dive incident using heart rate variability.
André Zenske,Andreas Koch,Wataru Kähler,Kerstin Oellrich,Clark Pepper,Thomas Muth,Jochen D. Schipke +6 more
TL;DR: Heart rate variability data gathered from several participating divers around the time of this event illustrate the potential utility of this variable in quantifying stress during diving and may be useful in addressing relevant diving related questions.
References
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