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

Table 1

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

	IMU (°)	Motion analysis system (°)	ICC (95% CI)		RMS (°)
Preferred	24.1 ± 2.6	23.9 ± 2.6	0.836 (0.617–0.935)	<0.001	1.50
Slow	22.3 ± 2.7	22.1 ± 3.0	0.876 (0.699–0.952)	<0.001	1.42
Fast	26.3 ± 3.3	25.5 ± 3.3	0.833 (0.597–0.935)	<0.001	1.92
Lean-preferred	22.5 ± 3.0	21.8 ± 2.9	0.831 (0.599–0.933)	<0.001	1.74
Lean-slow	20.6 ± 3.2	20.0 ± 2.8	0.851 (0.645–0.942)	<0.001	1.64