Method for Wearable Kinematic Gait Analysis Using a Harmonic Oscillator Applied to the Center of Mass

Table 5

Data of the analysed parameters: mean and standard deviation for the subject population. The labels of the acceptability criterion (considering only the value for the absolute percentage error) are E = excellent, G = good, S = sufficient, and NA = not acceptable.

Parameter	Reference value	Average ± σ
		A	B0	B1	B2	B3	B4	B5	Banth
Step number	52	53 ± 1	52 ± 0	52 ± 0	52 ± 0	52 ± 0	52 ± 0	52 ± 0	52 ± 0
Step count reliability		G	E	E	E	E	E	E	E
Step length (cm)	60	56.9 ± 5.5	59.0 ± 4.1	58.0 ± 1.3	60.9 ± 3.1	56.6 ± 3.3	49.2 ± 2.9	61.0 ± 3.3	59.9 ± 2.8
Step length accuracy percentage error	0	−5.15 ± 9.23	−1.74 ± 6.87	−3.26 ± 2.22	1.45 ± 5.22	−5.68 ± 5.43	−18.05 ± 4.83	1.73 ± 5.42	−0.21 ± 4.73
Absolute step length accuracy percentage error	0	8.48 ± 5.92	6.07 ± 3.15	3.26 ± 2.22	4.64 ± 2.44	6.89 ± 3.57	18.05 ± 4.83	4.85 ± 2.62	3.70 ± 2.71
Step length reliability		G	G	E	E	G	S	E	E
Distance (m)	31.2	30.29 ± 2.93	30.65 ± 2.14	30.18 ± 0.69	31.66 ± 1.62	29.43 ± 1.69	25.57 ± 1.51	31.78 ± 1.73	31.14 ± 1.47
Distance accuracy percentage error	0	−2.93 ± 9.38	−1.75 ± 6.87	−3.25 ± 2.21	1.46 ± 5.20	−5.67 ± 5.43	−18.04 ± 4.83	1.86 ± 5.54	−0.20 ± 4.71
Absolute distance accuracy percentage error	0	7.79 ± 5.53	6.07 ± 3.17	3.25 ± 2.21	4.62 ± 2.43	6.89 ± 3.55	18.04 ± 4.83	4.95 ± 2.74	3.68 ± 2.71
Distance reliability		G	G	E	E	G	S	E	E
Speed (m/s)	1.03 ± 0.06	0.99 ± 0.08	1.01 ± 0.07	0.99 ± 0.05	1.04 ± 0.04	0.97 ± 0.10	0.84 ± 0.05	1.04 ± 0.05	1.02 ± 0.07
Speed accuracy percentage error	0	−2.93 ± 9.38	−1.75 ± 6.87	−3.25 ± 2.21	1.46 ± 5.20	−5.67 ± 5.43	−18.04 ± 4.83	1.86 ± 5.54	−0.20 ± 4.71
Absolute speed accuracy percentage error	0	7.79 ± 5.53	6.07 ± 3.17	3.25 ± 2.21	4.62 ± 2.43	6.89 ± 3.55	18.04 ± 4.83	4.95 ± 2.74	3.68 ± 2.71
Speed reliability		G	G	E	E	G	S	E	E