Table 3 The intraclass correlation coefficient between the center of pressure and tracker-based body displacement parameters

Younger group

  distance-ML

0.72 (0.47 ~ 0.86)***

0.84 (0.67 ~ 0.92)***

0.84 (0.68 ~ 0.92)***

0.93 (0.84 ~ 0.97)***

  distance-AP

0.94 (0.87 ~ 0.97)***

0.94 (0.86 ~ 0.97)***

0.89 (0.78 ~ 0.95)***

0.95 (0.89 ~ 0.98)***

  velocity-ML

0.35 (-0.02 ~ 0.64)*

0.59 (0.28 ~ 0.79)***

0.43 (0.07 ~ 0.69)*

0.50 (0.16 ~ 0.74)**

  velocity-AP

0.55 (0.22 ~ 0.76)**

0.64 (0.35 ~ 0.82)***

0.56 (0.23 ~ 0.77)**

0.49 (0.15 ~ 0.73)**

  AREA-CE

0.76 (0.54 ~ 0.88)***

0.94 (0.87 ~ 0.97)***

0.94 (0.87 ~ 0.97)***

0.94 (0.88 ~ 0.97)***

Older group

  distance-ML

0.74 (0.51 ~ 0.87)***

0.77 (0.55 ~ 0.89)***

0.83 (0.65 ~ 0.92)***

0.89 (0.77 ~ 0.95)***

  distance-AP

0.93 (0.84 ~ 0.97)***

0.89 (0.77 ~ 0.95)***

0.92 (0.84 ~ 0.96)***

0.90 (0.80 ~ 0.96)***

  velocity-ML

0.34 (-0.04 ~ 0.64)*

0.36 (-0.02 ~ 0.65)*

0.41 (0.05 ~ 0.68)*

0.40 (0.03 ~ 0.67)*

  velocity-AP

0.51 (0.17 ~ 0.74)

0.43 (0.06 ~ 0.69)*

0.41 (0.04 ~ 0.68)*

0.36 (-0.02 ~ 0.65)*

  AREA-CE

0.89 (0.77 ~ 0.95)***

0.88 (0.76 ~ 0.94)***

0.93 (0.86 ~ 0.97)***

0.91 (0.81 ~ 0.96)***