Fig. 6From: Subgroups of lumbo-pelvic flexion kinematics are present in people with and without persistent low back painOnset delay of lumbar or pelvic movement. These graphs show ROM (Y axis) changes over time (X axis). Graph A was from a person who moved their lumbar spine into flexion with a two second delay before the pelvis started moving. Graph B shows a more typical pattern with a synchronous start of movement of the lumbar spine and pelvis. The green line indicates EMG activity of lumbar extensor musclesBack to article page