TABLE 2. Average Reconstruction Error per Joint by Different Denoising Methods (in Unit of cm) [1].

Name of the exercise		Number of samples	Raw Kinect data	Liu et al. [6]	Proposed method
muscle-tightening deep breathing (Exercise 1)	All testing data	9018	10.22	4.91	1.46
	Unreliable testing data	3514	13.82	6.49	3.1
over the head pumping (Exercise 2)	All testing data	8043	9.21	8.18	1.76
	Unreliable testing data	2436	13.12	11.89	6.23
push down pumping (Exercise 3)	All testing data	8638	8.94	7.36	3.38
	Unreliable testing data	3222	13.57	11.54	7.45
horizontal pumping (Exercise 4)	All testing data	10051	8.38	6.27	2.7
	Unreliable testing data	4400	13.79	10.13	6.76