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. 2011 Apr 15;66A(6):705–713. doi: 10.1093/gerona/glr054

Figure 4.

Figure 4.

Effect of anticipatory postural adjustment (APA) error on step length and forward displacement of center of mass (COM) prior to step. (A) Step length, normalized by participant height. (B) COM displacement, normalized by participant height. (C) COM displacement, normalized by step length. Data plotted are mean values from trials with correct APAs from 13 participants in each group and mean values from trials with APA errors from 12 of the same 13 participants in each group. Error bars represent standard errors across participant means.