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Table 3 Centre of pressure (CoP) parameters: Romberg test in eyes closed (EC) condition

From: Relationship between clinical and instrumental balance assessments in chronic post-stroke hemiparesis subjects

CoP Parameters Stroke subjects Control subjects P-values
Ellipse (mm 2 ) 425.5 ± 180.5 309.3 ± 169.2 0.195
Sway Area (mm 2 /s) 38.3 ± 31.6 17.9 ± 8.4 0.067
Path (mm) 610.8 ± 192.2 412.7 ± 122.6 0.020*
Path ML (mm) 275.5 ± 86.1 215.80 ± 76.4 0.153
Path AP (mm) 494.4 ± 170.4 305.1 ± 85.5 0.008*
CoPv (mm/s) 18.2 ± 10.0 10.3 ± 3.1 0.033*
CoPv ML (mm/s) 8.4 ± 5.2 5.4 ± 1.9 0.117
CoPv AP (mm/s) 14.6 ± 7.6 7.6 ± 2.1 0.015*
  1. Parameters computed from the CoP trajectory acquired during the Romberg Test in the EC condition for post-stroke (SS, second column) and control subjects (CS, third column). CoP path and velocity (CoPv), and the component in the antero-posterior direction were significantly different between SS and CS, as indicated by the p-values on the right-hand side column (the asterisks mark the values exceeding the threshold for significance, p < 0.05). Values are reported as mean ± standard deviation.