Parameter

Control group

Baseline

Week 3

P value

Time domain

SDNN (ms)

55.06 ± 9.93

50.48 ± 6.62

0.2065

RMSSD (ms)

61.05 ± 17.04

42.85 ± 5.91

0.0042

Frequency domain

LF (ms²)

2654.56 ± 1170.48

3666.02 ± 1571.14

0.0028

HF (ms²)

1670.62 ± 689.96

1098.73 ± 610.15

0.0044

LF/HF

2.79 ± 1.91

2.95 ± 1.29

0.7710