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Table 4 Test-Retest Reliability of ACC-based measures

From: ISway: a sensitive, valid and reliable measure of postural control

  CTRL PD
Test I Test II ICC(1-1) 95%Cl bounds Test I Test II ICC(1-1) 95%Cl bounds
Mean SEM Mean SEM ρ lower upper Mean SEM Mean SEM ρ lower upper
Jerk 0.065 0.007 0.067 0.007 0.87 0.67 0.95 0.235 0.110 0.188 0.066 0.86 0.66 0.95
Trajectory Measures
DIST 0.043 0.003 0.048 0.004 0.70 0.34 0.88 0.089 0.020 0.074 0.014 0.84 0.61 0.94
RMS 0.052 0.003 0.057 0.005 0.71 0.35 0.89 0.108 0.026 0.089 0.017 0.83 0.59 0.93
PATH 4.428 0.220 4.484 0.234 0.89 0.72 0.96 8.232 1.285 7.286 0.909 0.81 0.56 0.93
RANGE 0.275 0.016 0.283 0.020 0.74 0.41 0.90 0.567 0.150 0.494 0.102 0.82 0.58 0.93
MV 0.104 0.012 0.122 0.013 0.68 0.31 0.87 0.211 0.049 0.176 0.029 0.75 0.44 0.90
MF 0.58 0.03 0.55 0.05 0.60 0.17 0.84 0.54 0.04 0.54 0.04 0.55 0.12 0.81
Area Measures
AREA 0.0019 0.0002 0.0021 0.0002 0.76 0.45 0.91 0.0127 0.0059 0.0078 0.0031 0.73 0.40 0.89
Frequency Measures
PWR 0.41 0.04 0.47 0.08 0.61 0.19 0.84 3.54 2.24 2.04 1.33 0.85 0.64 0.94
F50 0.43 0.03 0.41 0.05 0.30 -0.20 0.68 0.36 0.01 0.37 0.02 0.35 -0.13 0.70
F95 1.95 0.10 1.92 0.10 0.59 0.17 0.83 1.78 0.16 2.00 0.14 0.67 0.31 0.87
CF 0.78 0.05 0.76 0.05 0.61 0.19 0.84 0.69 0.05 0.76 0.06 0.69 0.34 0.87
FD 0.76 0.01 0.79 0.02 0.25 -0.25 0.65 0.78 0.01 0.80 0.01 0.61 0.20 0.84