SDNN/RMSSD as a Surrogate for LF/HF: A Revised Investigation

<table>Calculation of the Pearson correlation coefficient of SDNN/RMSSD and LF/HF. The period of sampled epoch is 5 minutes and the number of subjects is 32. The correlation coefficient <svg height="7.0124998" id="M31" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 6.5 7.0124998" width="6.5" xmlns="http://www.w3.org/2000/svg">
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Modelling and Simulation in Engineering

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Figure 2: SDNN/RMSSD as a Surrogate for LF/HF: A Revised Investigation 