Fig. 2

Statistical parametric mapping results for A: anterior-posterior component of GRF, B: knee joint flexion/extension angle, C: pelvic hike/down control angle, and D: hip abduction/adduction angle. The upper panel shows the mean curve and standard deviation for comfortable speed walking (solid line) and fast speed walking (dashed line). The lower panel displays the SPM (t) curves, with significant differences indicated in black.