Table 6. The RMSE (in kJ) for the four activities standing jump (SJ), arm swing (AS), squat (SQ) and jumping jack (JJ).

Activity	1D			2D			3D
	GPR	KNNR	LINR	GPR	KNNR	LINR	GPR	KNNR	LINR
SJ	8.792	8.685	10.179	6.972	5.429	8.065	8.927	9.064	11.367
AS	10.746	9.519	7.743	6.136	6.852	5.785	6.385	6.213	5.811
SQ	7.370	9.987	9.926	6.856	8.472	10.011	5.678	6.037	6.779
JJ	11.571	12.139	13.676	11.860	11.415	14.116	11.335	11.228	14.479