TY - JOUR
T1 - New indices for quantification of the power spectrum of heart rate variability time series without the need of any frequency band definition
AU - García-Gonázlez, M. A.
AU - Fernández-Chimeno, M.
AU - Ferrer, J.
AU - Escorihuela, R. M.
AU - Parrado, E.
AU - Capdevila, L.
AU - Benítez, A.
AU - Angulo, R.
AU - Rodríguez, F. A.
AU - Iglesias, X.
AU - Bescós, R.
AU - Marina, M.
AU - Padullés, J. M.
AU - Ramos-Castro, J.
PY - 2011/8/1
Y1 - 2011/8/1
N2 - This paper presents a new family of indices for the frequency domain analysis of heart rate variability time series that do not need any frequency band definition. After proper detrending of the time series, a cumulated power spectrum is obtained and frequencies that contain a certain percentage of the power below them are identified, so median frequency, bandwidth and a measure of the power spectrum asymmetry are proposed to complement or improve the classical spectral indices as the ratio of the powers of LF and HF bands (LF/HF). In normal conditions the median frequency provides similar information as the classical indices, while the bandwidth and asymmetry can be complementary measures of the physiological state of the tested subject. The proposed indices seem to be a good choice for tracking changes in the power spectrum in exercise stress, and they can guide in the determination of frequency band limits in other animal species. © 2011 Institute of Physics and Engineering in Medicine.
AB - This paper presents a new family of indices for the frequency domain analysis of heart rate variability time series that do not need any frequency band definition. After proper detrending of the time series, a cumulated power spectrum is obtained and frequencies that contain a certain percentage of the power below them are identified, so median frequency, bandwidth and a measure of the power spectrum asymmetry are proposed to complement or improve the classical spectral indices as the ratio of the powers of LF and HF bands (LF/HF). In normal conditions the median frequency provides similar information as the classical indices, while the bandwidth and asymmetry can be complementary measures of the physiological state of the tested subject. The proposed indices seem to be a good choice for tracking changes in the power spectrum in exercise stress, and they can guide in the determination of frequency band limits in other animal species. © 2011 Institute of Physics and Engineering in Medicine.
KW - Heart rate variability
KW - exercise
KW - human and animal measurements
KW - paced breathing
KW - spectral analysis
U2 - https://doi.org/10.1088/0967-3334/32/8/001
DO - https://doi.org/10.1088/0967-3334/32/8/001
M3 - Article
VL - 32
SP - 995
EP - 1009
JO - Physiological Measurement
JF - Physiological Measurement
SN - 0967-3334
ER -