Table 4.

Relationship between acceleration of trunk (thorax, lumbar spine) obtained by magnetic inertial measurement unit and acceleration of the center of mass calculated from anterior ground reaction force (AGRF) (mean ± SD).

	Thorax		Lumbar		AGRF
	Acceleration (m/s2)	r (p)	Acceleration (m/s2)	r (p)	Acceleration (m/s2)
Preferred	1.97 ± 0.56	0.484 (0.042)	3.12 ± 0.67	0.590 (0.010)	2.14 ± 0.38
Slow	1.72 ± 0.66	0.445 (0.064)	2.49 ± 0.65	0.680 (0.002)	1.66 ± 0.37
Fast	2.51 ± 0.89	0.770 (<0.001)	3.57 ± 1.01	0.699 (0.001)	2.53 ± 0.48
Lean-preferred	1.72 ± 0.47	0.525 (0.025)	2.48 ± 0.48	0.541 (0.020)	1.70 ± 0.37
Lean-slow	1.49 ± 0.42	0.684 (0.002)	2.05 ± 0.51	0.828 (<0.001)	1.38 ± 0.44