The integral pulse frequency modulation model with time-varying threshold: application to heart rate variability analysis during exercise stress testing.

Abstract : In this paper, an approach for heart rate variability analysis during exercise stress testing is proposed based on the integral pulse frequency modulation (IPFM) model, where a time-varying threshold is included to account for the nonstationary mean heart rate. The proposed technique allows the estimation of the autonomic nervous system (ANS) modulating signal using the methods derived for the IPFM model with constant threshold plus a correction, which is shown to be needed to take into account the time-varying mean heart rate. On simulations, this technique allows the estimation of the ANS modulation on the heart from the beat occurrence time series with lower errors than the IPFM model with constant threshold (1.1% ± 1.3% versus 15.0% ± 14.9%). On an exercise stress testing database, the ANS modulation estimated by the proposed technique is closer to physiology than that obtained from the IPFM model with constant threshold, which tends to overestimate the ANS modulation during the recovery and underestimate it during the initial rest.
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IEEE Transactions on Biomedical Engineering, Institute of Electrical and Electronics Engineers, 2011, 58 (3), pp.642-652. <10.1109/TBME.2010.2095011>
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Contributeur : Olivier Meste <>
Soumis le : mercredi 10 août 2011 - 12:00:33
Dernière modification le : jeudi 11 août 2011 - 10:47:50

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Raquel Bailón, Ghailen Laouini, César Grao, Michele Orini, Pablo Laguna, et al.. The integral pulse frequency modulation model with time-varying threshold: application to heart rate variability analysis during exercise stress testing.. IEEE Transactions on Biomedical Engineering, Institute of Electrical and Electronics Engineers, 2011, 58 (3), pp.642-652. <10.1109/TBME.2010.2095011>. <hal-00614247>

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