Fig. 3
Mean ± SD of a COP − COMeven and b COP − COMclose for both groups in pre- and post-sessions. The white circles represent the COP group, the gray squares represent the COP + COG group, and the dark gray triangles represent the control group. COP − COMeven for the COP + COG group is seen to be significantly smaller than that for the COP group in the post-session (*p < 0.05). For the COP + COG group, COP − COMeven in the post-session was significantly smaller than that in the pre-session (*p < 0.05). The data were normalized by the foot length (FL) for each participant