Trunk, lumbar and pelvic continuous relative phase in runners with and without a history of low back pain

The purpose of this study was to use Continuous Relative Phase (CRP) and CRP variability (CRPvar) to characterize coordination patterns in trunk, lumbar and pelvic regions in runners with a history of resolved LBP vs healthy controls (HC). While previous studies have looked at a resolved LBP in runners, none has included the lumbar region. Analysis revealed that the patient population on average ran with a more out-of-phase pattern in lumbar-trunk axial rotation. While pelvic-lumbar lateral bending and flexion/extension was an in-phase pattern.