Vacuum Myofascial Therapy Device and Physical Activity for the Treatment of Chronic Non-specific Low Back Pain. A Single Blind Randomized Clinical Trial

"This group will treated five times with the analgesic program of physium therapy. Each maneuver was performed once per session by slow and progressive. The whole procedure lasted no more than 30 minutes.~Then they carried out the physical activity program"

Active Comparator: Physical activity The exercise protocol would last 5 weeks, performing 3 exercise sessions per week, with an effective work time of 20 minutes per session. The exercises would be directly focused on activating the core stabilizing muscles.