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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