Table A1.

Effect of speed on the cumulative distance versus accelerometer range. First (shaded) row reports the estimated slope of the cumulative distance versus mean speed using the baseline sensor (100 g range accelerometer). Remaining (unshaded) rows report estimated differences in this slope for IMUs with indicated acceleration ranges compared to the baseline IMU (i.e., the increased error sensitivity to speed with the indicated reductions in acceleration range relative to the baseline range).

Speed Effect	Estimated Slope (%/(m/s))	p-Value	95% Conf. Int.
Baseline (100g)	−0.39	<0.01	(−0.65, −0.13)
75 g vs. Baseline	0.00	0.99	(−0.37, 0.37)
50 g vs. Baseline	−0.03	0.88	(−0.39, 0.34)
24 g vs. Baseline	−0.57	<0.01	(−0.94, −0.21)
16 g vs. Baseline	−1.08	<0.001	(−1.45, −0.72)
10 g vs. Baseline	−2.24	<0.001	(−2.60, −1.87)
6 g vs. Baseline	−5.70	<0.001	(−6.06, −5.33)