Variable | Low (n = 31) | High (n = 35) | F | ES | |
---|---|---|---|---|---|

SDNN (ms)^{*} |
66.1 (22.3) | 57.9 (25.2) | 36.3 | .01 | .6 |

pNN50 (%)^{*} |
24.2 (5.5) | 20.1 (4.0) | 45.6 | .01 | .9 |

InRMSSD (ms)^{*} |
3.9 (.3) | 3.3 (.4) | 52.7 | .01 | 1.0 |

LFnu^{*} |
45.8 (9.7) | 55.0 (20.3) | 52.8 | .01 | 1.0 |

HFnu^{*} |
56.4 (21.2) | 47.1 (20.4) | 40.6 | .01 | .6 |

LF/HF^{*} |
.9 (.1) | 1.0 (.1) | 53.0 | .01 | .9 |

IPS (points) |
775.1 (76.0) | 769.5 (71.4) | 5.6 | .28 | .1 |

Note. SDNN = standard deviation of all N-N intervals; pNN50 = successive percentage of differences in R-R intervals greater than 50 ms; InRMSSD = logarithm of the difference of the quadratic mean of the successive normal R-R intervals; LFnu = corrected low frequency spectral component; HFnu = corrected high frequency spectral component; LF/HF = ratio between LF and HF; IPS = International Point Score; ES = effect size