Table 2.

Step length estimation result.

Test	Step counting		Step length (cm)			Distance (m)
	Ref.	Estimated	Ref.	Estimated	Error (%)	Ref.	Estimated	Error (%)
Normal
Sub1	17	16	72.12	72.57	0.62	12.27	11.61	5.37
Sub2	16	15	77.00	76.14	1.11	12.32	11.42	7.30
Sub3	18	18	68.44	71.27	4.13	12.32	12.82	4.05
Sub4	17	17	73.96	70.34	4.89	12.57	11.95	4.93
Sub5	18	18	70.13	70.91	1.11	12.62	12.76	1.10
Fast
Sub1	15	15	82.13	77.44	5.71	12.32	11.61	5.76
Sub2	14	13	88.72	86.69	2.28	12.42	11.27	9.25
Sub3	14	14	90.35	86.73	4.00	12.65	12.14	4.03
Sub4	14	13	88.36	81.11	8.20	12.37	10.54	14.7
Sub5	15	15	83.99	81.71	2.71	12.60	12.25	2.77
Slow
Sub1	18	18	68.16	66.10	3.02	12.27	11.89	3.09
Sub2	19	19	65.10	66.36	1.93	12.37	12.60	1.85
Sub3	21	21	59.39	66.33	11.6	12.47	13.93	11.7
Sub4	19	19	66.31	64.42	2.85	12.60	12.24	2.85
Sub5	19	19	65.37	66.33	1.46	12.42	12.60	1.44