LnRMSSD |
-0.46 [-0.76, -0.01] | 0.03 |

LnRMSSD %CV |
0.41 [0.00, 0.71] | 0.05 |

R-R interval |
-0.17 [-0.58, 0.31] | 0.46 |

LnRMSSD:RR |
-0.28 [-0.65, 0.21] | 0.23 |

LnRMSSD-7 |
-0.55 [-0.79, -0.17] | <0.01** |

LnRMSSD:RR-7 |
-0.01 [-0.43, 0.42] | 0.97 |

DC |
0.09 [-0.40, 0.55] | 0.69 |

DC-7 |
0.26 [-0.22, 0.64] | 0.26 |

* - p <0.05.

LnRMSSD - natural logarithm of the square of the mean sum of the squared differences between R-R intervals, LnRMSSD %CV - LnRMSSD coefficient of variation, LnRMSSD:RR - LnRMSSD to R-R interval ratio, LnRMSSD-7 – LnRMSSD averaged over 7 days, LnRMSSD:RR-7 - LnRMSSD:RR averaged over 7 days, DC – direct current potential, DC-7 – direct current potential averaged over 7 days, r – correlation coefficient; CI – confidence interval,