Correlation among Poincare´plot indexes and time and frequency domain measures of heart rate variability

Primary objective: In order to corroborate the reported performance advantage of Poincar´eplot indexes as autonomic activity markers, the correlation among these indexes and those computed from the time and frequency domains were obtained. Methods and procedures: Starting from the RR series derived...

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Bibliographic Details
Published in:Journal of medical engineering & technology 2001, Vol.25 (6), p.240-248
Main Author: Carrasco, M. J. Gaitán, R. González, O. Yánez, S.
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Cluster Analysis
Electrocardiography
Electrocardiography. Vectocardiography
Electrodiagnosis. Electric activity recording
Exercise - physiology
Female
Heart Rate - physiology
Humans
Investigative techniques, diagnostic techniques (general aspects)
Male
Medical sciences
Models, Statistical
Nonlinear Dynamics
Reference Values
Rest - physiology
Signal Processing, Computer-Assisted
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Summary:Primary objective: In order to corroborate the reported performance advantage of Poincar´eplot indexes as autonomic activity markers, the correlation among these indexes and those computed from the time and frequency domains were obtained. Methods and procedures: Starting from the RR series derived from the ECG of 21 healthy volunteers during five manoeuvres, longitudinal (L), transverse (T) axis, and autocorrelation (r) from Poincar´eplots, rMSSD and standard deviation (SD) in the temporal domain, and frequency domain indexes were computed. Main outcomes and results: Poincar´e plot indexes were correlated in a better way with the time indexes, rather than the spectral measures. A strong correlation (0.997) between L and SD was observed, while an underlying mathematical relationship was established for T vs rMSSD. Conclusions: Poincaré plot indexes may be considered as equivalent or surrogates of the temporal ones, and they do not have a better performance as autonomic markers.
ISSN:0309-1902
1464-522X
DOI:10.1080/03091900110086651