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Table 1 Test-retest reproducibility of centre of pressure path length during four different tests of static balance

From: Field assessment of balance in 10 to 14 year old children, reproducibility and validity of the Nintendo Wii board

  n NWB/AMTI Mean COPL (cm (SD)) NWB/AMTI Mean COP velocity (cm (SD)) NWB/AMTI CCC (95% CI) Mean diff (cm (SD)) LOA (cm) SEM (cm) MDC (cm (%))
Bilat., EO         
COPL1 54/52 59.7 (13.4)/53.7 (12.3) 1.99 (0.4)/1.79 (0.4)      
COPL2   59.9 (13.9)/51.9 (11.4) 1.99 (0.4)/1.73 (0.4)      
NWB     0.76 (0.65-0.87) 0.02 (8.7) -17.0-17.0 6.1 16.9 (28.2)
AMTI     0.79 (0.69-0.89) 1.9 (7.5) -12.8-16.5 5.3 14.7 (27.3)
Dom. leg, EO         
COPL1 53/51 129.3 (29.1)/135.2 (34.3) 4.31 (1.0)/4.51 (1.1)      
COPL2   128.9 (34.9)/133.2 (33.8) 4.30 (1.2)/4.44 (1.1)      
NWB     0.83 (0.75-0.91) 0.5 (18.6) -35.8-36.7 13.1 36.3 (28.1)
AMTI     0.86 0.78-0.93) 2.0 (18.2) -33.6-37.6 12.8 35.6 (26.3)
Non-dom. leg, EO         
COPL1 52/51 127.6 (27.3)/137.4 (31.7) 4.25 (0.9)/4.58 (0.7)      
COPL2   128.8 (29.5)/130.5 (30.0) 4.29 (1.0)/4.35 (1.0)      
NWB     0.77 (0.66-0.88) -2.0 (18.9) -38.9-34.9 13.3 36.9 (28.6)
AMTI     0.80 (0.70-0.90) 6.9 (18.4) -29.2-43.0 13.0 36.1 (26.3)
Bilat. EC         
COPL1 53/52 83.7 (16.8)/76.1 (19.5) 2.76 (0.6)/2.54 (0.7)      
COPL2   84.6 (16.5)/74.5 (18.7) 2.81 (0.5)/2.48 (0.6)      
NWB     0.76 (0.65-0.88) -1.0 (11.5) -23.5–21.4 8.1 22.4 (26.5)
AMTI     0.83 (0.75-0.92) 1.7 (11.1) -19.9-23.2 7.7 21.5 (28.1)
  1. NWB: Nintendo Wii Board. AMTI: AMTI force platform, Bilat: bilateral stance, Dom: dominant, Non-dom: non-dominant, COPL: Centre Of Pressure path Length, SD: Standard Deviation, COP speed: Centre of pressure velocity, CCC: Concordance Correlation Coefficient, CI: Confidence Interval, Mean diff: Mean difference of the means, LOA: Limits of Agreement, SEM: Standard Error of the Measurement, MDC: Minimal Detectable Change, EO = eyes open, EC = eyes closed, COPL1 = COPL test, COPL2 = COPL re-test.