Non-specific chronic low back pain (NSCLBP) poses a significant disability and economic burden worldwide. Fear avoidance is suggested to contribute to its chronicity and reduced treatment effect. National guidelines recommend exercise as a component of multidisciplinary rehabilitation but its interaction with fear avoidance is ambiguous. This systematic review examined the effect of exercise-based interventions (EBIs) on fear avoidance NSCLBP. RCTs comparing EBIs to usual care in adults with NSCLBP were included. A systematic search of CINAHL, Medline, EMBASE, Web of Science, Scopus and Cochrane Library (up to January 2019) revealed 10 eligible trials. Following risk of bias assessment, 6 studies were included for data extraction and narrative synthesis. EBIs were not found superior to usual care in reducing fear avoidance at any follow-up. There was evidence that reducing fear avoidance is probably not the mechanism through which EBIs affect pain and disability. In adherent patients, EBIs did not result in greater clinically relevant improvements in pain or disability than usual care, in the short- or intermediate-term.Background and Purpose
Methods and Results
