IRCT2014020716514N1 IRCT 2014-05-31 Semnan University of Medical Sciences Effect of cognitive behavior fear management on people with non-specific chronic low back pain The study of effective of cognitive behavior fear management with stabilization exercise on automatic and voluntary activity of muscles in people with non-specific chronic low back pain 2014-03-01 anticipated 30 Complete https://irct.ir/trial/15430 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. 2-3 non-specific chronic low back pain. Intervention 1: cognotive behavioral therapy is intervention. cognitive behavioral therapy involves a combination of cognitive and behavioral techniques and is based on the assumption that the individual's way of thinking and affects behavior and emotions. in this cases the idea is to target maladaptive thoughts and behaviors usingstructured technique that aim to identify, challenge, and subsequently change patterns of unhelpful thoughts and behaviors. It gives to pateint once a week for 8 weeks by spesking to pateint. Intervention 2: core stabilization exercise: the target of these exercise is improvment of muscles activation and increase coordination of those and reduce the copression pressur between joints. it gives 3 times on the week for 8 weeks by therapists.