Table 2.

CC between the predicted joint angle of different models and the measurements (“true” values) of all subjects (mean ± std).

		2 m/s	3 m/s	4 m/s	5 m/s
Speed-dependent	GP	0.6276 ± 0.4151	0.7819 ± 0.1202	0.8241 ± 0.1120	0.8170 ± 0.1080
	NARX-GP	0.9999 ± 0.0001	0.9999 ± 0.0002	0.9999 ± 0.00004	0.9999 ± 0.0001
Multi-speed	GP	0.6381 ± 0.3708	0.7744 ± 0.1573	0.8026 ± 0.1141	0.7710 ± 0.1591
	NARX-GP	0.9998 ± 0.0002	0.9999 ± 0.00003	0.9999 ± 0.00003	0.9999 ± 0.0001
Speed-independent	GP	0.5970 ± 0.3333	0.7387 ± 0.2172	0.7493 ± 0.1540	0.6733 ± 0.2494
	NARX-GP	0.9991 ± 0.0020	0.9999 ± 0.00006	0.9998 ± 0.0002	0.9996 ± 0.0009