Heart rate variability time domain analysis

aRR (mean ± SD)

704.58 ± 166.48

746.76 ± 141.49

0.302

sdRR (mean ± SD)

30.86 ± 31.20

34.71 ± 28.55

0.982

avHR (median, IQR)

97.33, 85.59–122.96

88.96, 83.47–96.40

0.029

sdHR (median, IQR)

2.03, 1.71–3.32

3.08, 1.88–4.53

0.899

RMSSD (mean ± SD)

17.03 ± 26.46

35.12 ± 148.41

0.278

NN50 (median, IQR)

0.00, 0.00–2.00

0.00, 0.00–13.75

0.043

pNN50 (median, IQR)

0.00, 0.00–0.45

0.00, 0.00–3.85

0.051

TINN (mean ± SD)

122.56 ± 93.47

150.75 ± 137.51

0.399

Heart rate variability frequency domain analysis

VLF (median, IQR)

58.50, 41.75–218.25

243.00, 132.00–396.00

0.416

LF ms^{2} (median, IQR)

15.50, 3.00–217.00

100.00, 60.00–262.00

0.072

HF ms^{2} (median, IQR)

4.50, 0.75–25.00

44.00, 21.00–167.00

0.011

LF norm (median, IQR)

89.05, 67.98–92.90

78.00, 50.30–84.00

0.128

HF norm (median, IQR)

10.95, 7.03–31.98

21.00, 16.00–49.30

0.128

LF/HF (median, IQR)

8.11, 3.32–13.26

4.52, 1.02–5.62

0.147

TP (median, IQR)

76.00, 46.50–504.25

454.00, 275.00–713.00

0.175

Heart rate complexity nonlinear analysis

Poincare plot SD1(mean ± SD)

12.01 ± 18.76

17.49 ± 25.03

0.257

Poincare plot SD2 (mean ± SD)

41.34 ± 40.65

43.42 ± 31.65

0.545

Approximate entropy (mean ± SD)

1.00 ± 0.25

1.09 ± 0.15

0.001

Sample entropy (mean ± SD)

1.13 ± 0.45

1.39 ± 0.38

0.144

DFAα1 (mean ± SD)

1.24 ± 0.39

1.12 ± 0.31

0.045

DFAα2 (median, IQR)

1.09, 0.93–1.68

1.00, 0.89–1.11

0.027
