Low back pain is a common disorder, occurring worldwide in both males and females in all age groups1. The prevalence is higher in females and the incidence peaks between 30 and 65 years. It is currently the most frequent musculoskeletal cause of functional disability and it has a major socio-economic impact on today's society. Although a small percentage of persons with low back pain can be diagnosed with a specific underlying cause, almost 90% of persons with low back pain present with symptoms of nonspecific origin. A part of these symptoms are only of short duration, but 23% of all people will develop nonspecific chronic low back pain (NSCLBP).