Transcranial direct current pacing in pain, disability and quality of life in individuals with chronic nonspecific low back pain: a randomized clinical trial
tDCS, chronic pain, analgesia, low back pain.
Transcranial direct current stimulation (tDCS) may produce beneficial effects in patients with musculoskeletal pain, where complementary mechanistic targets may improve clinical outcomes and motor performance. This study aims to verify the effects of tDCS on pain, disability and quality of life in individuals with chronic nonspecific low back pain (LCLD). This is a double-blind, randomized controlled clinical trial. The study will take place from July 2022 to November 2022 and will be developed in the Laboratory of Neuromuscular Performance Analysis of the Federal University of Rio Grande do Norte (UFRN). The sample will consist of 40 individuals of both sexes, aged between 18 and 60 years with DLCI. Participants will be individually randomized into two groups in equal numbers: Group 1 that will receive the intervention with active tDCS (n=20); Group 2 that will receive the simulated tDCS (n=20). The intervention will be performed twice a week for 10 weeks, totaling 20 sessions and will consist of the application of 20 minutes of active tDCS with an intensity of 2mA or simulated applied to the dorsolateral prefrontal cortex (DLPFC). The outcomes evaluated will be: pain, disability and quality of life. They will be measured 1 week before the start of the study, after each session and within 1 week after completion of the 10-week intervention. It is expected that tDCS will be able to reduce pain, disability and chronicity in individuals with non-specific chronic low back pain, in addition to improving their quality of life.