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Table 1 Mean (standard deviation) of the regionalised CoP variables for the JIA and able-bodied control groups.

From: Preliminary study of regionalised centre-of-pressure analysis in patients with juvenile idiopathic arthritis

Variable

Region

JIA (n=14)

Controls (n=10)

Mean difference (95% CI)

VCoPave (m/s)

Foot

0.28 (0.03)

0.31 (0.05)

0.02 (0.00, 0.05)

 

Heel

0.27 (0.08)

0.29 (0.10)

0.02 (-0.02, 0.08)

 

Midfoot

0.42 (0.10)

0.48 (0.08)

0.06 (0.00, 0.12)

 

Forefoot

0.22 (0.03)

0.23 (0.05)

0.01 (-0.02, 0.03)

 

Toes

0.76 (0.48)

0.69 (0.25)

-0.06 (-0.40, 0.28)

VCoPmax (m/s)

Foot

1.39 (0.77)

1.38 (0.60)

-0.01 (-0.62, 0.60)

 

Heel

0.59 (0.14)

0.65 (0.17)

0.06 (-0.07, 0.19)

 

Midfoot

0.63 (0.32)

0.66 (0.09)

0.03 (-0.18, 0.25)

 

Forefoot

0.83 (0.42)

0.86 (0.33)

0.03 (-0.29, 0.36)

 

Toes

1.23 (0.73)

1.31 (0.57)

0.08 (-0.49, 0.66)

DCoP (% stance)

Heel

25.83 (6.96)

26.01 (6.91)

0.18 (-5.78, 6.14)

 

Midfoot

20.71 (4.14)

19.19 (3.63)

-1.52 (-4.89, 1.87)

 

Forefoot

46.54 (8.92)

48.20 (7.51)

1.66 (-5.53, 8.85)

 

Toes

6.92 (3.27)

6.60 (1.22)

-0.32 (-2.58, 1.94)

VCoP (m/s)

50% foot length

46.54 (7.28)

45.21 (7.93)

-1.34 (-7.82, 5.15)

  1. VCoPave (m/s): average velocity of the centre of pressure; VCoPmax (m/s): maximum velocity of the centre of pressure; DCoP (% stance): duration of the centre of pressure; CI: confidence interval