TRANSCUTANEOUS ELECTRICAL NERVE STIMULATION AND EXERCISE IN PATIENTS WITH CHRONIC NON-SPECIFIC LOW BACK PAIN: RANDOMIZED CLINICAL TRIAL
Chronic Pain, Analgesia and Physical Exercise
Introduction: Chronic non-specific low back pain has a negative impact on functional capacity, limiting the performance of exercises and, in many cases, the work activity of an important part of the population. Among the non-pharmacological resources for the treatment of this disorder there are electrophysical resources, such as Transcutaneous Electrical Nerve Stimulation (TENS) in Burst mode. Objective: To analyze the effects of TENS Burst associated with exercise on pain management, functional capacity and global perception of patients with chronic non-specific low back pain. Materials and methods: This is a controlled, randomized and blinded clinical trial, composed of subjects of both sexes, randomly divided into two groups: TENS-placebo group (gTENSp) and active TENS group (gTENSa). All subjects will be submitted to the evaluation measures of: Pain through the Visual Analogue Scale (VAS) and pain threshold by pressure through the Algometer; Functional capacity using the Roland-Morris questionnaire and the Sit and Stand Test; and scale of global perception. Pain will be assessed before and immediately after each protocol session and one month after the end of treatment. Functional capacity and global perception will be evaluated before, two days after the end of the protocol and one month after it. The intervention protocol will be 40 minutes, 40 minutes of exercises and associated application of placebo or active TENS. Expected results: Active TENS Burst associated with exercise has a better result in the management of pain sensation, functional capacity and global perception in patients with chronic low back pain, due to the potentiation of analgesic effects.