Fig. 3.
Group mean hip, knee, and ankle joint angles in young (n = 12), older nonfallers (n = 11), and older fallers (n = 10) walking with and without optical flow perturbations plotted against an averaged gait cycle, from heel-strike to heel-strike. *Significant ANOVA main effect of perturbations. 1Significant difference compared with young adults via pairwise comparisons.