everything hertz: methodological issues in short-term frequency-domain hrv

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ID: 194549
2014
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Abstract
Frequency analysis of the electrocardiographic RR interval is a common method of quantifying autonomic outflow by measuring the beat-to-beat modulation of the heart (heart rate variability; HRV). This review identifies a series of problems with the methods of doing so – the interpretation of low-frequency spectral power, the multiple use of equivalent normalised low frequency (LFnu), high frequency (HFnu) and ratio (LF/HF) terms, and the lack of control over extraneous variables, and reviews research in the calendar year 2012 to determine their prevalence. Results support the mathematical equivalency of ratio units across studies, a reliance on those variables to explain autonomic outflow, and insufficient control of critical experimental variables. Research measurement of HRV has a substantial need for general methodological improvement.
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heathers2014frontierseverything Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors James A J Heathers
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Journal Journal of clinical and experimental dentistry
Year 2014
DOI
10.3389/fphys.2014.00177
URL
http://journal.frontiersin.org/Journal/10.3389/fphys.2014.00177/full
Keywords
heart rate variability autonomic nervous system parasympathetic nervous system sympathetic nervous system

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