The objective of this study was to evaluate the quality of life (QL) with the use of the SF-36 Questionnaire in patients with chronic nonspecific
low back pain (CNLBP). Thirty patients with CNLBP were randomly assigned to one of three groups (Iso group (Isostretching), GPR group (Global Postural Reeducation), and the Iso+GPR group. Patients underwent
physical therapy assessment with the use of the Vertebral Spine Assessment, the Visual Analog Scale of
Pain (VASP), and the SF-36 life quality questionnaire before the first session (first assessment), after three months of treatment (second assessment) and reassessed two months after the final session in the follow-up (third assessment). The results indicated that both
physical therapy techniques reduced
pain (p<0.001); when the techniques (Iso+GPR) were combined, the reduction in
pain was significantly greater; and, in the follow-up assessment, the GPR method was more efficient. As for the QL,
physical therapy techniques were effective after the interventions (p<0.001), and the Iso method was more effective when patients were reassessed in the follow-up. We conclude that the
physical therapy techniques used in this study were efficient to treat CNLBP in the patients since they reduced
pain and increased QL according to the results of the SF-36 questionnaire. Level of Evidence II, Randomized Controlled Clinical Trial.