Heart Rate Variability (HRV) Measure

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A Heart Rate Variability (HRV) Measure is a physiological variability measure in the time interval between heartbeats.



References

2021

  • (Wikipedia, 2021) ⇒ https://en.wikipedia.org/wiki/Heart_rate_variability Retrieved:2021-2-19.
    • Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the variation in the beat-to-beat interval.

      Other terms used include: "cycle length variability", "RR variability" (where R is a point corresponding to the peak of the QRS complex of the ECG wave; and RR is the interval between successive Rs), and "heart period variability".

      Methods used to detect beats include: ECG, blood pressure, ballistocardiograms, and the pulse wave signal derived from a photoplethysmograph (PPG). ECG is considered superiorbecause it provides a clear waveform, which makes it easier to exclude heartbeats not originating in the sinoatrial node. The term "NN" is used in place of RR to emphasize the fact that the processed beats are "normal" beats.

2018

  • (Young & Benton, 2018) ⇒ Hayley A. Young, and David Benton. (2018). “Heart-rate Variability: A Biomarker to Study the Influence of Nutrition on Physiological and Psychological Health?. ” Behavioural pharmacology 29, no. 2 -
    • QUOTE: ... Biomarkers are important as proxy measures when studying health or disease states that develop over long periods. As a disease can develop over decades, this is an area where there is a need for biomarkers that identify aspects of life style that are potentially beneficial or problematic. The case will be made for using heart-rate variability (HRV) as an indicator of the physiological response to food by those interested in the association between diet and various health outcomes, and by manufacturers developing functional foods with potential health benefits. HRV is of interest as a wide range of diseases are associated with decreased variability, including diabetes, cardiovascular disease and psychiatric disorders. In addition, there is an increasing literature that reports that HRV responds to various aspects of the diet, raising the possibility that HRV offers a convenient measure of potential benefit.

      Traditionally, heart rate (HR) has been considered a product of emotional response or stress, but it is becoming apparent that the interval between beats is a marker of the capacity to regulate internal and external demands. The intervals are not constant, but differ from beat to beat: essentially a higher HRV indicates better general health (Jarczok et al., 2015). ...

2015