Efficacy of Electrical Dry Needling in Pain, Sensitivity, Functionality and Quality of Life of Patients With Chronic Non-specific Low Back Pain

The experimental group consisting of 40 subjects will perform electrostimulation on the active myofascial trigger points of the following muscles: quadratus lumbar, multifidus and iliocostalis. The electrostimulation of the PGM will be carried out using needle electrodes, the generated current will be produced by a TENS device with a frequency of 2 Hz and a pulse width of 250 μs, the application will be approximately 30 min. The therapeutic intervention will be 1 session per week for a total of 6 weeks.

The control group G2, formed by 40 subjects, will perform an ischemic compression technique in active PGM with a time between 20 seconds and 1 minute until pain inhibition is achieved, and finally, analytical stretching will be carried out on the quadratus lumbar, multifidus and iliocostal muscles, 1 weekly session for 6 weeks, in addition to providing them with a training dossier on postural education in their activities of daily life.