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Table 3 Parameters of Heart rate variability(HRV) after acupuncture stimulation at PC6 and ST36

From: Efficacy and safety of acupuncture for dizziness and vertigo in emergency department: a pilot cohort study

  Control group p-value Acupuncture p-value
  (n = 23)   (n = 37)  
  pre(n = 23) post (n = 22)   pre(n = 37) post (n = 33)  
HRV(SD) 52.4(46.4) 60.9(32.8) 0.62 74.4(68.2) 85.8(82.2) 0.39
HF%(SD) 52.6(16.4) 52.4(17.9) 0.66 47.5(18.5) 47.6(19.8) 0.90
LF%(SD) 47.2(16.4) 47.6(17.9) 0.66 52.5(18.5) 52.4(19.8) 0.90
LF/HF(SD) 1.1(0.8) 1.3(1.5) 0.92 1.5(1.3) 1.6(1.4) 0.81
VLF(SD) 3050.5(7699.5) 3355.1(4110.1) 0.61 4040.4(9305.8) 3612.3(4462.0) 0.74
LF(SD) 906.6(1972.5) 700.00 0.39 1596.7(2877.3) 1896.0(2579.2) 0.56
HF(SD) 544.2(731.0) 721.4(539.4) 0.87 830.8(769.1) 1082.7(1078.7) 0.03*
Total Power(SD) 2813.5(3778.9) 5055.7(5075.0) 0.81 6839.8(11156.8) 6713.(7423.0) 0.90
RMSSD(SD) 47.3(28.9) 62.8(25.7) 0.60 58.7(28.8) 59.4(33.3) 0.73
PNN50(SD) 19.8(22.8) 36.7(21.5) 0.35 32.0(23.8) 33.0(25.9) 0.69
  1. p-value by paired t test comparing with post-treatment and pre-treatment. *p < 0.05
  2. heart rate variability(HRV), high frequency (HF), low frequency (LF), very low frequency (VLF), sympatho-parasympathetic balance index (LF/HF), total power, root mean square of successive differences (RMSSD), and the proportion of NN50 divided by total number of NNs (PNN50)