Table 3.

CoP indicators.

Indices	Definition
	ML	AP
Mean distance	$d_{{COP}_x}=\frac{1}{N}{\displaystyle \sum _{i=1}^N}\left|{CoP}_{xi}\right|$	$d_{{COP}_y}=\frac{1}{N}{\displaystyle \sum _{i=1}^N}\left|{CoP}_{yi}\right|$
Mean velocity	$\frac{1}{N-1}{\displaystyle \sum _{i=1}^{N-1}}{v}_{CoPxi}$	$\frac{1}{N-1}{\displaystyle \sum _{i=1}^{N-1}}{v}_{CoPyi}$
95% PEA	$PEA=\pi {\chi }_{0.95,2}^2\sqrt{\mathrm{d}\mathrm{e}\mathrm{t}\left(S\right)}$; $S=\left(\begin{array}{cc}{s}_x^2& s_{x,y}\\ s_{x,y}& s_y^2\end{array}\right)$
Poincaré diagram	$CoP\left(i\right)=\sqrt{{\left(x_{CoPi}\right)}^2+{\left(y_{CoPi}\right)}^2}$  $CoP\left(i\right)\mathrm{v}\mathrm{s}CoP\left(\mathrm{i}+1\right);$