Abstract: “Pain is an unpleasant feeling, which causes discomfort and can range from mild to chronic. It can be due to physical and emotional experience. About 80 % of adults experience low back pain (LBP) at some point in their lifetimes.The purpose of this study is to record the sEMG signals of the human back to enlighten the correct posture to be maintained to reduce pain due to the different occupations, especially in the low back region. The spine especially lumbar vertebrae are considered as major elements to diagnose the lower back problems. These lower back disorders are mainly caused due to the various dynamic stresses developed by the compression of the lumbar vertebrae. Surface electrodes were used to record EMG of lower back, in the forward and backward direction from Yaxis,placed at different positions of vertebrae of the lumber region to have a view on the stress level of muscles involved in the movement. In this paper few features of EMG signals are analyzed using MATLAB.The presen”

Keywords: Lumbar vertebrae, Back Posture, Low back pain, EMG signal