Validity of Measurement for Trailing Limb Angle and Propulsion Force during Gait Using a Magnetic Inertial Measurement Unit

Table 2

Time to peak of trailing limb angle measured by magnetic inertial measurement units (IMU) and motion analysis system (mean ± SD).

	IMU (ms)	Motion analysis system (ms)	ICC (95% CI)		RMS (ms)
Preferred	629.2 ± 29.9	620.9 ± 30.0	0.876 (0.631–0.956)	<0.001	15.5
Slow	737.9 ± 66.3	733.9 ± 70.1	0.978 (0.943–0.992)	<0.001	14.8
Fast	566.0 ± 49.4	557.3 ± 46.6	0.944 (0.816–0.981)	<0.001	16.7
Lean-preferred	754.0 ± 60.7	750.6 ± 63.7	0.971 (0.926–0.989)	<0.001	15.4
Lean-slow	904.4 ± 115.1	898.8 ± 116.4	0.992 (0.978–0.997)	<0.001	15.0