Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/22854
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Type: Journal article
Title: Scaling graphs of heart rate time series in athletes demonstrating the VLF, LF and HF regions
Author: Baumert, M.
Brechtel, L.
Lock, J.
Voss, A.
Abbott, D.
Citation: Physiological Measurement, 2006; 27(9):N35-N39
Publisher: IOP Publishing Ltd
Issue Date: 2006
ISSN: 0967-3334
1361-6579
Statement of
Responsibility: 
Mathias Baumert, Lars M Brechtel, Juergen Lock, Andreas Voss and Derek Abbott
Abstract: Scaling analysis of heart rate time series has emerged as a useful tool for the assessment of autonomic cardiac control. We investigate the heart rate time series of ten athletes (five males and five females), by applying detrended fluctuation analysis (DFA). High resolution ECGs are recorded under standardized resting conditions over 30 min and subsequently heart rate time series are extracted and artifacts filtered. We find three distinct regions of scale invariance, which correspond to the well-known VLF, LF and HF bands in the power spectra of heart rate variability. The scaling exponents α are αHF: 1.15 [0.96–1.22], αLF: 0.68 [0.57–0.84], αVLF: 0.83[0.82–0.99], p < 10−5). In conclusion, DFA scaling exponents of heart rate time series should be fitted to the VLF, LF and HF ranges, respectively.
Keywords: detrended fluctuation analysis; heart rate variability; training
Description: © 2006 IOP Publishing Ltd
RMID: 0020061363
DOI: 10.1088/0967-3334/27/9/N01
Published version: http://www.iop.org/EJ/abstract/0967-3334/27/9/N01/
Appears in Collections:Electrical and Electronic Engineering publications

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