Figure 6 : Qualitative characterization of the timing of contribution can be done on the basis of comparison between slopes of curves representing pelvic and lumbar motion.

The absence of near vertical or horizontal regions in the curve suggests that pelvic and lumbar motion simultaneously contributed to the trunk motion.

Bazrgari et al.Physical Therapy and Rehabilitation  2016 3:5DOI : 10.7243/2055-2386-3-5