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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.