Table 4: Comparison measures of reliability for p-vectors averaged across sessions for each acceleration direction (X=Vertical; Y=Medial-lateral; Z=Anterior-posterior; and Res = $\sqrt{x^2+y^2+z^2}$ ), including intraclass correlation coefficient (ICC), standard error of the measurement ( $sd\times \sqrt{(1-ICC)})$ ), and the reliability coefficient ( $\text{CR = SEM}\times \text{1}\text{.96}\sqrt{2}$ )

Axis	p-vector	ICC (A, 1)	CI (95%)	SEM	CR
X	P-1	-0.083	-0.314<ICC<0.370	± 0.610	± 1.692
	P-2	-0.019	-0.329<ICC<-0.479	± 0.518	± 1.435
	P-3	-0.031	-0.314<ICC<-0.452	± 0.587	± 1.627
Y	P-1	-0.058	-0.304<ICC<0.404	± 0.597	± 1.655
	P-2	-0.007	-0.326<ICC<-0.493	± 0.536	± 1.485
	P-3	-0.042	-0.333<ICC<0,450	± 0.599	± 1.661
Z	P-1	-0.047	-0.343<ICC<0.450	± 0.059	± 0.165
	P-2	-0.077	-0.317<ICC<-0.382	± 0.570	± 1.580
	P-3	0.064	-0.280<ICC<0.554	± 0.566	± 1.568
Res	P-1	-0.058	-0.251<ICC<0.351	± 0.590	± 1.647
	P-2	0.039	-0.290<ICC<0.531	± 0.572	± 1.584
	P-3	-0.086	-0.316<ICC<0.365	± 0.596	± 1.651