An overview of heart rate variability metrics and norms

F Shaffer, JP Ginsberg - Frontiers in public health, 2017 - frontiersin.org
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 …

A critical review of ultra-short-term heart rate variability norms research

F Shaffer, ZM Meehan, CL Zerr - Frontiers in neuroscience, 2020 - frontiersin.org
Heart rate variability (HRV) is the fluctuation in time between successive heartbeats and is
defined by interbeat intervals. Researchers have shown that short-term (∼ 5-min) and long …

A practical guide to resonance frequency assessment for heart rate variability biofeedback

F Shaffer, ZM Meehan - Frontiers in Neuroscience, 2020 - frontiersin.org
Heart rate variability (HRV) represents fluctuations in the time intervals between successive
heartbeats, which are termed interbeat intervals. HRV is an emergent property of complex …

Validity of the Empatica E4 wristband to estimate resting-state heart rate variability in a lab-based context

H Stuyck, L Dalla Costa, A Cleeremans… - International Journal of …, 2022 - Elsevier
Lab research might benefit from the advantages of wearable devices, such as their ease of
use, to estimate pulse rate (PR) and pulse rate variability (PRV) as an equivalent for heart …

Uncertainties in the analysis of heart rate variability: a systematic review

L Lu, T Zhu, D Morelli, A Creagh, Z Liu… - IEEE Reviews in …, 2023 - ieeexplore.ieee.org
Heart rate variability (HRV) is an important metric with a variety of applications in clinical
situations such as cardiovascular diseases, diabetes mellitus, and mental health. HRV data …

[HTML][HTML] Reduced heart rate variability is associated with vulnerability to depression

C Dell'Acqua, E Dal Bò, SM Benvenuti… - Journal of Affective …, 2020 - Elsevier
Background: Heart rate variability (HRV) mirrors cardiac autonomic modulation, an index of
well-being. Reduced HRV has been reported in depression, but few studies investigated …

The movesense medical sensor chest belt device as single channel ECG for RR interval detection and HRV analysis during resting state and incremental exercise: A …

B Rogers, M Schaffarczyk, M Clauß, L Mourot… - Sensors, 2022 - mdpi.com
The value of heart rate variability (HRV) in the fields of health, disease, and exercise science
has been established through numerous investigations. The typical mobile-based HRV …

[HTML][HTML] Feasibility of ultra-short-term analysis of heart rate and systolic arterial pressure variability at rest and during stress via time-domain and entropy-based …

G Volpes, C Barà, A Busacca, S Stivala, M Javorka… - Sensors, 2022 - mdpi.com
Heart Rate Variability (HRV) and Blood Pressure Variability (BPV) are widely employed
tools for characterizing the complex behavior of cardiovascular dynamics. Usually, HRV and …

[HTML][HTML] Leaderboard positions and stress—experimental investigations into an element of gamification

M Schlömmer, T Spieß, S Schlögl - Sustainability, 2021 - mdpi.com
Gamification, ie, the use of game elements in non-game contexts, aims to increase peoples'
motivation and productivity in professional settings. While previous work has shown both …

Fractal correlation properties of HRV as a noninvasive biomarker to assess the physiological status of triathletes during simulated warm-up sessions at low exercise …

M Schaffarczyk, B Rogers, R Reer… - BMC Sports Science …, 2022 - Springer
Background The non-linear index alpha 1 of Detrended Fluctuation Analysis (DFA a1) of
heart rate variability, has been shown to be a marker of fatigue during endurance exercise …