The primary objective of this study is to compare the efficacy of two different exercise programs for the reduction of pain and disability in a specific subgroup of NSLBP patients and aims to investigate the additive effect of hip stabilization exercises. The investigators hypothesize that the combined local (segmental) stabilizer and hip stabilizer program (T2) will be more effective in reducing pain and disability in NSLBP patients compared to the local (segmental) stabilizer program (T1).