Figure 4.

Influence of restricting arm swing combined with increasing walking speed on trunk sway velocity. Bars and error bars represent, correspondingly, mean values and standard deviations for trunk sway velocity of typically developing children, children with bilateral cerebral palsy and children with unilateral cerebral palsy. White bars represent the values for “free arm swing and preferred walking speed.” Light gray bars represent the values for “restricted arm swing and preferred walking speed.” Dark gray bars represent the values for “free arm swing and high walking speed.” Black bars represent the values for “restricted arm swing and high walking speed.” A double dagger indicates a significant between subject group difference (p < 0.05) in “restricted arm swing and preferred walking speed” compared to “free arm swing and preferred walking speed” (Tukey's pairwise comparisons). A horizontal line indicates a significant between subject group difference (p < 0.05) for the indicated subject groups in the indicated experimental conditions (Tukey's pairwise comparisons).