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A new statistical method allows for detailed breath-by-breath detection and quantification of respiratory sinus arrhythmia.
A statistical method with the advantages of 1) enabling graphical representation of within-respiratory cycle heart rate variations, 2) detecting the presence of respiratory sinus arrhythmia (RSA) in a moving window, and 3) providing breath-by-breath RSA amplitude and phase obtained from the fitting of a sinusoid to the instantaneous relative heart rate is presented.
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Dinh et al. (1999) studied this question.
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