Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Spectral components of heart rate variability determined by wavelet analysis
AU - Lotric, Maja Bracic
AU - Stefanovska, Aneta
AU - Stajer, Dusan
AU - Urbancic-Rovan, Vilma
PY - 2000/11
Y1 - 2000/11
N2 - Spectral components of heart rate variability (HRV) are determined in the time-frequency domain using a wavelet transform. Based on the finer estimation of low-frequency content enabled by the logarithmic resolution of the wavelet transform, corrections of spectral intervals, already defined by Fourier and model based methods, are proposed. The characteristic peaks between 0.0095 and 0.6, Hz. are traced in time and four spectral intervals are defined, I(0.0095-0.021 Hz), II (0.021-0.052 Hz), III (0.052-0.145 Hz) and IV (0.145-0.6 Hz), within which peaks are located for all subjects included. These intervals are shown to be invariant regardless of the age and the state of the system. We also show that the frequency and power of the spectral components are related to age, AMI and particularly to type II diabetes mellitus.
AB - Spectral components of heart rate variability (HRV) are determined in the time-frequency domain using a wavelet transform. Based on the finer estimation of low-frequency content enabled by the logarithmic resolution of the wavelet transform, corrections of spectral intervals, already defined by Fourier and model based methods, are proposed. The characteristic peaks between 0.0095 and 0.6, Hz. are traced in time and four spectral intervals are defined, I(0.0095-0.021 Hz), II (0.021-0.052 Hz), III (0.052-0.145 Hz) and IV (0.145-0.6 Hz), within which peaks are located for all subjects included. These intervals are shown to be invariant regardless of the age and the state of the system. We also show that the frequency and power of the spectral components are related to age, AMI and particularly to type II diabetes mellitus.
KW - MYOCARDIAL-INFARCTION
KW - AGE
KW - time-frequency analysis
KW - heart rate variability
KW - ageing
KW - DYNAMICS
KW - acute myocardial infarction
KW - diabetes mellitus
KW - wavelet transform
KW - FREQUENCY-DOMAIN
KW - MORTALITY
KW - PERFUSION SIGNAL
KW - OSCILLATIONS
KW - cardiovascular dynamics
U2 - 10.1088/0967-3334/21/4/302
DO - 10.1088/0967-3334/21/4/302
M3 - Journal article
VL - 21
SP - 441
EP - 457
JO - Physiological Measurement
JF - Physiological Measurement
SN - 0967-3334
IS - 4
ER -