Table 2.

HRV Measures—Correlation Coefficients.

	1	2	3	4	5	6	7
1. Mean IBI, ms	1
2. SDNNi, ms	0.52 ***	1
3. ln TP, ms2/Hz	0.53 ***	0.95 ***	1
4. ln VLF, ms2/Hz	0.60 ***	0.94 ***	0.97 ***	1
5. ln LF, ms2/Hz	0.31 **	0.83 ***	0.90 ***	0.81 ***	1
6. ln HF, ms2/Hz	0.50 ***	0.87 ***	0.91 ***	0.85 ***	0.83 ***	1
7. ln LF/HF	−0.59 ***	−0.55 ***	−0.55 ***	−0.55 ***	−0.28 **	−0.73 ***	1

^** p < 0.01, ^*** p < 0.001.