Table 1.

Acceleration differences observed between simultaneously recorded reference and misplaced IMUs.

			RMSE (g)		Δ |Magnitude| (g)		Δ |Magnitude| (% Reference)		Δ Timing (ms)		Δ Timing (% Stride)
Location	Axis	Misplacement	Mean	LOA	Mean	LOA	Mean	LOA	Mean	LOA	Mean	LOA
shank	x	anterior-proximal	0.86	1.02	−0.11	3.61	0.46	37.69	−1.36	21.21	−0.19	3.12
		posterior-proximal	0.60	0.80	−0.01	3.69	0.49	41.47	0.07	15.43	0.02	2.28
	y	anterior-proximal	0.64	0.54	−0.85	2.32	−8.22	20.91	0.76	8.52	0.11	1.20
		posterior-proximal	0.70	0.67	0.42	3.21	5.87	28.46	−0.14	13.50	−0.01	1.92
	z	anterior-proximal	0.84	0.83	2.45	4.05	36.82	70.88	1.16	20.14	0.15	2.85
		posterior-proximal	0.96	0.85	−0.91	4.60	−9.09	68.21	2.07	31.93	0.32	4.54
pelvis	x	anterior-proximal	0.29	0.22	−0.23	0.88	−8.71	36.82	3.47	32.00	0.50	4.50
		posterior-proximal	0.36	0.35	0.01	1.39	1.05	58.35	−2.33	30.34	−0.33	4.41
	y	anterior-proximal	0.31	0.22	−0.02	1.17	0.60	23.98	2.41	13.01	0.33	1.81
		posterior-proximal	0.32	0.26	−0.07	1.09	−2.09	25.48	−1.67	12.51	−0.25	1.86
	z	anterior-proximal	0.39	0.29	−0.19	1.21	−8.41	68.79	6.89	40.43	0.90	5.64
		posterior-proximal	0.47	0.28	−0.01	1.91	10.73	96.00	4.71	35.80	0.72	5.31
sacrum	x	left-proximal	0.45	0.37	−0.20	1.65	−4.83	55.43	6.57	24.52	0.97	3.74
		right-proximal	0.45	0.34	−0.06	1.77	−0.14	66.92	5.40	23.65	0.78	3.67
	y	left-proximal	0.28	0.30	0.06	1.41	2.67	28.12	0.63	15.29	0.10	2.22
		right-proximal	0.27	0.25	0.18	1.24	5.84	29.26	0.78	13.18	0.12	1.94
	z	left-proximal	0.28	0.28	−0.26	1.74	−4.69	41.44	0.94	26.11	0.11	3.83
		right-proximal	0.25	0.22	−0.09	0.65	−3.01	32.23	2.95	29.38	0.41	4.19