Exercises on unstable surfaces, such as SB exercises,cause co-contraction of global and local muscles at the beginning of motor control, thereby improve stability of the spine . Similarly, Imai et al. suggested that the use of SB exercises resulted increased activity of all trunk muscles compared to exercises on the floor. Better improvements seen in the lumbar stabilization exercises group may be explained due to the fact that this exercise program specifically targets those muscles, which are primarily affected in LBP .Previous studies identified selective atrophy of the LM and decreased activity of transverse abdominis in individuals with LBP . In addition, Richardson et al. reported that both these muscles are vital for the stability of the lumbar spine, reducing compressive forces on the spinal structures.