Does Electroacupuncture Treatment Reduce Pain and Change Quantitative Sensory Testing Responses in Patients with Chronic Nonspecific Low Back Pain? A Randomized Controlled Clinical Trial

Table 2

Pain intensity and quantitative sensory testing in patients with chronic nonspecific low back pain before and after treatment. NWC: number of words chosen. PRI: pain rating index. TDT: tactile detection threshold. TAM: tibialis anterior muscle. PPT: pressure pain threshold. CTR: control group. Data expressed as mean and standard error of the mean. p<0.05. p<0.01. Wilcoxon matched pairs test.

	Electroacupuncture		CTR 1 (needle + device off)		CTR 2 (needle alone)		CTR 3 (withdrawn needles)
	Before	After	Before	After	Before	After	Before	After
Resting pain (0 – 10)	3.61 ± 0.64	1.33 ± 0.46	4.40 ± 0.56	2.69 ± 0.42	3.16 ± 0.47	2.06 ± 0.49	3.47 ± 0.45	1.53 ± 0,45l
Moviment pain (0 – 10)	4.33 ± 0.55	1.55 ± 0.51	5.25 ± 0.48	2.69 ± 0.41	3.11 ± 0.74	2.00 ± 0.47	3.41 ± 0.75	1.93 ± 0,57
NWC McGill (0 – 20)	18.24 ± 0.55	16.75 ± 1.16	18.11 ± 0.60	15.75 ± 1.35	18.00 ± 0.53	16.15 ± 0.60	17.25 ± 0.67	11.84 ± 1.76
PRI McGill (0 – 78)	34.81 ± 2.16	30.37 ± 2.96	34.33 ± 1.85	27.62 ± 2.37	37.40 ± 2.29	27.65 ± 1.67	31.95 ± 2.22	24.41 ± 3.92
TDT right lumbar (mN)	0.147 ± 0.024	0.095 ± 0.025	0.174 ± 0.026	0.099 ± 0.007	0.080 ± 0.007	0.087 ± 0.014	0.153 ± 0.053	0.077 ± 0.006
TDT left lumbar (mN)	0.128 ± 0.022	0.090 ± 0.024	0.135 ± 0.020	0.098 ± 0.013	0.148 ± 0.049	0.137 ± 0.050	0.116 ± 0.200	0.105 ± 0.020
TDT right TAM (mN)	0.233 ± 0.071	0.148 ± 0.051	0.254 ± 0.062	0.131 ± 0.020	0.104 ± 0.015	0.087 ± 0.014	0.253 ± 0.073	0.176 ± 0.052
TDT left TAM (mN)	0.179 ± 0.056	0.104 ± 0.019	0.226 ± 0.051	0.175 ± 0.034	0.109 ± 0.025	0.137 ± 0.030	0.284 ± 0.074	0.207 ± 0.058
PPT right lumbar (kgf)	3.52 ± 0.52	3.48 ± 0.46	3.86 ± 0.49	3.38 ± 0.34	3.18 ± 0.35	2.92 ± 0.35	0.317 ± 0.41	3.54 ± 0.46
PPT left lumbar (kgf)	3.36 ± 0.44	3.42 ± 0.43	4.03 ± 0.48	3.58 ± 0.36	3.02 ± 0.38	2.92 ± 0.35	3.00 ± 0.43	3.83 ± 0.52
PPT right TAM (kgf)	3.16 ± 0.32	3.57 ± 0.33	3.93 ± 0.45	3.66 ± 0.32	3.07 ± 0.39	2.88 ± 0.37	3.13 ± 0.48	3.66 ± 0.56
PPT left TAM (kgf)	3.18 ± 0.35	3.55 ± 0.35	3.97 ± 0.51	3.51 ± 0.30	3.02 ± 0.37	2.82 ± 0.38	3.16 ± 0.46	3.46 ± 0.44
Temporal summation 1” (0 – 10)	4.12 ± 0.73	2.37 ± 0.34	4.16 ± 0.60	2.87 ± 0.46	3.60 ± 0.63	2.93 ± 0.30	3.58 ± 0.54	2.35 ± 0.50
Temporal summation 10” (0 – 10)	5.31 ± 0.69	3.75 ± 0.36	6.00 ± 0.59	4.25 ± 0.49	4.75 ± 0.65	4.00 ± 0.43	5.23 ± 0.53	3.78 ± 0.54
Temporal summation 20” (0 – 10)	6.18 ± 0.69	4.75 ± 0.41	6.61 ± 0.54	5.12 ± 0.55	5.51 ± 0.61	4.33 ± 0.46	6.35 ± 0.54	4.21 ± 0.62
Temporal summation 30” (0 – 10)	6.68 ± 0.71	6.06 ± 0.54	7.33 ± 0.66	6.18 ± 0.56	6.04 ± 0.61	5.20 ± 0.50	7.05 ± 0.48	5.00 ± 0.66
Conditioned pain modulation pre (kgf)	3.21 ± 0.52	3.57 ± 0.45	3.26 ± 0.40	3.19 ± 0.38	2.84 ± 0.34	2.90 ± 0.28	3.52 ± 0.44	3.00 ± 0.39
Conditioned pain modulation during (kgf)	3.50 ± 0.54	3.71 ± 0.30	3.50 ± 0.42	3.06 ± 0.36	2.78 ± 0.24	2.99 ± 0.29	3.53 ± 0.38	3.07 ± 0.38
Conditioned pain modulation after (kgf)	3.14 ± 0.35	3.83 ± 0.44	3.34 ± 0.33	3.39 ± 0.40	2.86 ± 0.33	2.67 ± 0.25	3.59 ± 0.50	2.74 ± 0.23