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Table 5 Time effect for the total study sample, B indicating the regression line for each time point (n = 123)

From: The effect of spinal manipulative therapy and home stretching exercises on heart rate variability in patients with persistent or recurrent neck pain: a randomized controlled trial

R-R

B

P value

95% CI

− 7.64

0.082

− 16.26

0.98

RMSSD

− 1.48

0.098

− 3.23

0.28

SDNN

− 1.58

0.018

− 2.88

− 0.28

LFms

− 25.62

0.414

− 87.27

36.03

HFms

− 36.75

0.056

− 74.51

1.02

LF/HF

0.14

0.420

− 0.20

0.48

Total power

− 71.94

0.089

− 157.28

13.40

  1. R-R mean R-R interval, RMSSD root mean square of successive differences, SDNN standard deviation of normal to normal, LF low frequency, HF high frequency, LF/HF LF/HF ratio