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. Author manuscript; available in PMC: 2018 Apr 18.
Published in final edited form as: J Biomech. 2017 Feb 21;55:41–47. doi: 10.1016/j.jbiomech.2017.02.014

Fig. 4.

Fig. 4

First step characteristics: Step length, COM-to-ankle distance (COM-Ankle), COM velocity (COMv), and Stability margin at first step contact in the ML direction, normalized by leg length at (a) perturbation level 3, (b) level 4, and (c) level 5. Values and error bars are mean and SEM. (a) *p = 0.017, **p < 0.001, ***p = 0.002; (b) *p = 0.001, **p = 0.018, ***p < 0.001; (c) *p = 0.041, **p = 0.024.