Low Back Pain Clinical Trial
Official title:
Transcranial Direct Current Stimulation Combined With Aerobic Exercise for the Treatment of Chronic Nonspecific Low Back Pain: a Randomized Clinical Trial
The goal of this clinical trial is to learn about the effects of transcranial direct current stimulation (tDCS) combined with aerobic exercise in non-specific low back pain patients. The main question aims to answer: • Which are the effects of tDCS treatment combined with aerobic exercise compared to Sham tDCS combined with aerobic exercise in non-specific Low Back Pain? Participants will be asked to complete questionnaires and they will receive treatments as tDCS or Sham tDCS and aerobic exercise (treadmill walking). Researchers will compare a group who is treated with a combination of tDCS and aerobic exercise versus a group receiving placebo tDCS and aerobic exercise to see the effects on pain intensity, pressure pain, disability, kinesiophobia, quality of life, catastrophism, Heart Rate Variability and cortical excitation.
Low back pain (LBP) is the main cause of disability worldwide with a prevalence of 70 to 85% of the population. Chronic LBP (CLBP) is defined as a pain lasting more than 12 weeks. CLBP does not have peripheral nociceptive stimuli, but it is characterized by the presence of a chronic change in neuroplasticity. Transcranial direct current stimulation (tDCS) is a type of therapeutic intervention that can modulate the cortical excitability of a wide neural network involved in the elaboration of pain, resulting in an efficacy option for CLBP treatment. Aerobic exercise represents another typology of effective therapeutic intervention in the treatment of pain intensity and disability related to CLBP. The main objective of the study is to determine the efficacy of tDCS combined with aerobic exercise compared to shame/placebo tDCS combined with aerobic exercise in middle-aged subjects with non-specific CLBP in the short, medium and long term. Methods: In a double-blinded pilot randomized controlled trial, 38 subjects aged between 18 and 65 years, with a diagnose of non-specific LBP for 3 months, a Visual Analogue Scale (VAS) result of >20mm and a Roland-Morris Scale result of >4 will be selected for the following study. Participants will be divided in two groups of 19 subjects each one: experimental group A (20 minutes of tDCS at 2 mili Amper + 20-30 minutes of aerobic exercise at 60-80% of HRmax) and controlled group B (30 seconds of sham/placebo tDCS at 2milli amperes + 20-30 minutes of aerobic exercise at 60-80% of maximum heart rate). The following outcomes will be measured: pain intensity (100mm VAS), pressure pain (pressure algometer), disability (Roland-Morris questionnaire), kinesiophobia (Tampa Scale for kinesiophobia), quality of life (SF-12 health questionnaire), catastrophism (Pain Catastrophizing Scale), Heart Rate Variability ( Polar Team) and cortical excitation (Critical Flicker Fusion). ;
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