Table 1.

The table reports the values for the reliability index, ρ, which is a dimensionless number in the range, [ $\frac{1}{3}$, 1], relative to each calibration movement. The value is expressed as a mean (±1 SD) computed on our group of 40 children.

Calibration Movement	Thorax	Upper Arm L	Upper Arm R	Forearm L	Forearm R
Supine on the ground	0.98 ±0.006	0.98 ±0.018	0.99 ±0.013	0.97 ±0.022	0.98 ±0.018
Thorax rotation on the transverse plane	0.79 ±0.043	⫽	⫽	⫽	⫽
Thorax flexion-extension	0.78 ±0.050	⫽	⫽	⫽	⫽
Forearm flexion-extension with bar	⫽	⫽	⫽	0.74 ±0.044	0.74 ±0.046
Upper arm flexion-extension with bar	⫽	0.63 ±0.044	0.63 ±0.041	0.68 ±0.048	0.69 ±0.049
Upper arm flexion-extension	⫽	0.60 ±0.042	0.61 ±0.038	0.55 ±0.031	0.57 ±0.035
Upper arm abb-adduction	⫽	0.58 ±0.035	0.59 ±0.028	0.53 ±0.034	0.55 ±0.031
Forearm prono-supination	⫽	0.67 ±0.089	0.66 ±0.085	0.83 ±0.053	0.84 ±0.050