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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