Table 1.

Root mean square error (RMSE) is expressed in degree (st. dev.), p = Pearson coefficient of correlation.

		MBS-RK	MBS-VK	RK-VK
Shoulder joint angle	RMSE	9.5° (±2.9)	5.2° (±1.5)	8.5° (±3.6)
	p	0.83	0.92	0.86
Elbow joint angle	RMSE	11.4° (±2.0)	8.2° (±1.3)	13.0° (±2.3)
	p	0.97	0.98	0.96