Effect of Acupuncture and Laser Acupuncture in the Treatment of People With Chronic Nonspecific Low Back Pain.

Treatment with ACP will be performed by inserting sterile acupuncture needles 0.25 x 13 mm into the acupoints BL23 (Shenshu), BL25 (Dachangshu), BL40 (Weizhong), BL62 (Qixue), SI3 (Houxi) and Jiaji , for the treatment of chronic non-specific low back pain. Interventions will last one hour, and will happen twice a week for 5 weeks. In order to increase the effectiveness of blinding for both groups, in this study the model was adopted: "combined simulated control". In this case, Sham acupuncture points will be used to simulate the treatment, as follows: i) Arms: 3 cm above the lateral epicondyle of the elbow, ii) Lumbar spine: Iliac crest on the same line as the greater trochanter of the femur. Thus, in the ACP group, the placebo LACP (without dosemetry) will be applied to these 4 points together with the real treatment.

The use of LACP (808 nm wavelength, 100 mW, energy 6 J per acp point), on acupoints BL23 (Shenshu), BL25 (Dachangshu), BL40 (Weizhong), BL62 (Qixue), SI3 (Houxi) and Jiaji will be used as a treatment for nonspecific chronic low back pain. Interventions will last one hour, and will happen twice a week for 5 weeks. Sham acupuncture points will be used to simulate the treatment, as follows: i) Arms: 3 cm above the lateral epicondyle of the elbow, ii) Lumbar spine: Iliac crest on the same line as the greater trochanter of the femur. These sham points will be inserted superficially so that the depth is sufficient to keep them fixed during the experiment, without individuals reporting the "dequi".