Table 2.

The accuracy of the Kinect sensor for Euclidean matching and DTW matching. The RMSE and also the Pearson correlation (r) were averaged for all iterations performed during data collection. A qualitative scale with which to measure the degree of correlation present at each signal has been implemented. High: if r lies between $\pm 0.80$ and $\pm 1$. Moderate: if r lies between $\pm 0.50$ and $\pm 0.79$. Low: if r lies below $\pm 0.49$. The average speed from all the iterations was $1.52\pm 0.05$ m/s.

		Euclidean Matching			Dynamic Time Warping Matching
		RMSE (°)	Pearson Correlation	Qualitative r	RMSE (°)	Pearson Correlation	Qualitative r
		(Mean ± SD)	(Mean ± SD)	(H./M./L.)	(Mean ± SD)	(Mean ± SD)	(H./M./L.)
Sagittal	Knee flex/ext.	13.15 ± 1.83	0.91 ± 0.04	HIGH	10.47 ± 1.49	0.94 ± 0.02	HIGH
	Hip flex/ext.	6.20 ± 2.08	0.94 ± 0.03	HIGH	2.65 ± 1.06	0.99 ± 0.01	HIGH
	Shoulder flex/ext.	9.53 ± 3.88	0.94 ± 0.02	HIGH	5.80 ± 3.39	0.97 ± 0.03	HIGH
	Trunk forw/back. tilt	2.09 ± 0.38	0.75 ± 0.02	MODERATE	1.93 ± 0.40	0.91 ± 0.04	HIGH
	Pelvis ant/post. tilt	3.22 ± 0.37	0.72 ± 0.07	MODERATE	3.14 ± 0.39	0.87 ± 0.06	HIGH
Frontal	Hip add/abd.	5.83 ± 0.99	0.41 ± 0.19	LOW	4.70 ± 0.94	0.63 ± 0.13	MODERATE
	Shoulder add./abd.	11.76 ± 3.98	0.87 ± 0.08	HIGH	11.69 ± 3.98	0.94 ± 0.05	HIGH
	Trunk right/left sway	1.31 ± 0.39	0.50 ± 0.19	MODERATE	1.10 ± 0.36	0.62 ± 0.18	MODERATE
	Pelvis up/down. obliquity	4.44 ± 0.48	0.40 ± 0.15	LOW	3.11 ± 0.42	0.76 ± 0.08	MODERATE
Transverse	Trunk int/ext. rotation	5.26 ± 0.64	0.88 ± 0.05	HIGH	5.09 ± 0.58	0.96 ± 0.02	HIGH
	Pelvis int/ext. rotation	5.88 ± 0.36	0.54 ± 0.14	MODERATE	4.81 ± 0.43	0.72 ± 0.12	MODERATE