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

Table 3

Relationship between increments of velocity calculated from acceleration of trunk (thorax, lumbar spine) and normalized impulse of anterior ground reaction force (AGRF) (mean ± SD).

	Thorax		Lumbar		Normalized impulse of AGRF (N·s/kg)
	Increments of velocity (m/s)		Increments of velocity (m/s)
Preferred	0.183 ± 0.052	0.781 (<0.001)	0.233 ± 0.065	0.757 (<0.001)	0.287 ± 0.052
Slow	0.176 ± 0.068	0.790 (<0.001)	0.213 ± 0.057	0.816 (<0.001)	0.264± 0.052
Fast	0.202 ± 0.081	0.848 (<0.001)	0.271 ± 0.099	0.755 (<0.001)	0.298 ± 0.057
Lean-preferred	0.193 ± 0.058	0.581 (0.012)	0.273 ± 0.087	0.809 (<0.001)	0.289 ± 0.067
Lean-slow	0.216 ± 0.095	0.807 (<0.001)	0.285 ± 0.115	0.892 (<0.001)	0.286 ± 0.092