Poincaré plot descriptors correlate with conventional HRV parameters during paced breathing, highlighting the impact of respiratory rate on HRV measures.
The descriptors of the Poincaré plot of RR intervals are significantly correlated with measures of BRS and time and frequency domain HRV, but not with heart rate. A faster respiratory rate reduces long-term HRV measures and temporarily increases HF.
Guzik et al. (Mon,) studied this question.
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