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. 2017 Mar 27;11:127. doi: 10.3389/fnhum.2017.00127

Figure 4.

Figure 4

Mean of parameters related to the forward progression under the Stance, Symmetrical and Swing conditions. xCoPmax: maximal backward shift of the CoP during APA. x’CoMHO: anteroposterior velocity of the CoM at heel-off. x’CoMFC: anteroposterior CoM velocity at foot-contact. x’CoMmax: peak of the anteroposterior CoM velocity at the end of the first step. EXEd: duration of step execution. Negative values indicate a displacement or velocity directed backwards.