Abstract
Currently, the number of patients with low back pain continues to increase due to the aging society. My purpose is that find a motion to reduce the load to waist from the difference in the movement of the body between lumbar pain patients and healthy subjects, in the operation of squat. I get the coordinate data of the body, to shoot in motion capture the movement of the body when you are doing an operation subject squat. Since the result of performing the analysis using the principal component analysis, the difference comes into the angle of the ankle and upper arm, I will examine the load to waist and this difference.