Table 3.
Correlations between cardiac variables in the control group.
| MeanHR | PEP | RMSSD | SampEn | ||
|---|---|---|---|---|---|
| MeanHR | r | 1 | |||
| p | – | ||||
| n | 25 | ||||
| PEP | r | −0.47* | 1 | ||
| p | 0.02 | – | |||
| n | 25 | 25 | |||
| RMSSD | r | −0.68*** | 0.49** | 1 | |
| p | < 0.001 | 0.01 | – | ||
| n | 25 | 25 | 25 | ||
| SampEn | r | −0.46* | 0.04 | 0.15 | 1 |
| p | 0.02 | 0.87 | 0.47 | – | |
| n | 25 | 25 | 25 | 25 | |
| DFA-α1 | r | 0.35 | −0.33 | −0.53** | −0.31 |
| p | 0.09 | 0.10 | 0.01 | 0.13 | |
| n | 25 | 25 | 25 | 25 |
r, Pearson product-moment correlation coefficient; DFA, detrended fluctuation analysis; RMSSD, root mean square of successive differences; PEP, pre-ejection period; SampEn, sample entropy;
*
p ≤ 0.05;
**
p ≤ 0.01;
***
p ≤ 0.001.