Table 2.

Bias, limits of agreement and measured precision. The selection process is as follows, the variables with a bias outside the reference LoA are marked with a strikethrough and removed from further analysis (step 1). The variables highlighted in the measured precision are the ones with a value lower than one (step 2).

			Bias (ms)				Lower Limit (ms)				Upper Limit (ms)				Adjusted Precision (ms)
	Sensor	Filter	Resultant	Z	Y	X	Resultant	Z	Y	X	Resultant	Z	Y	X	Resultant	Z	Y	X
Average	GYRO	0	−2.8	2.4	9.4	−7.6	−35.2	−29.8	−53.6	−88.2	29.4	34.4	72.4	73.2	13.6	12.8	74.6	110
		3	−5.4	0.2	5.8	−10.6	−33.0	−28.0	−34.0	−63.4	22.2	28.6	45.8	42.4	11.6	6.6	28.2	54.2
		6	−3.2	2.6	8.2	−9.4	−34.0	−29.2	−36.4	−80.0	27.6	34.4	52.8	61.2	12.6	12.0	37.6	89.6
		9	−3.2	2.6	12.2	−9.2	−34.8	−29.8	−48.2	−83.4	28.4	35.0	72.4	65.2	13.2	13.2	69.0	97.0
		12	−3.4	2.2	12.2	−8.8	−36.0	−31.2	−49.4	−83.6	29.0	35.6	73.8	65.8	14.4	15.4	71.6	97.8
	ACC	0	−10.8	−29.8	−12.6	−111	−79.6		−42.2		58.0		16.8		86.0		20.6
		3	−15.0	−5.0	−13.6	−57.4	−79.4	−388	−40.0		49.6	378	12.6		77.4	715	18.4
		6	−9.8	−4.2	−13.8	−62.8	−32.0	−371	−40.4		12.4	362	12.6		10.6	681	19.0
		9	−11.0	−12.4	−13.8	−65.2	−12.4	−362	−41.8		57.6	337	14.2		85.6	648	20.2
		12	−10.4	−19.8	−12.8	−67.0	−79.8	−350	−42.4		59.0	310	16.6		87.2	609	20.8
Right	GYRO	0	−5.0	−0.8	−0.2	7.6	−39.4	−35.6	−67.6	−163	29.4	34.0	67.0	178	18.0	18.2	83.2	290
		3	−5.2	0.4	4.8	4.0	−36.8	−32.0	−40.6	−91.2	28.2	32.8	50.2	99.4	15.2	13.2	39.4	139
		6	−4.4	2.2	7.0	17.4	−37.0	−32.4	−45.2	−101	28.2	36.6	59.2	136	15.6	17.6	53.0	185
		9	−4.0	2.4	8.2	16.2	−38.2	−32.4	−49.8	−104	30.2	37.2	66.0	136	16.8	18.0	64.2	189
		12	−4.2	2.6	8.4	19.4	−37.6	−33.6	−48.6	−106	29.4	38.8	65.6	144	16.2	20.8	62.6	199
	ACC	0	−9.4	−54.6	−14.4	−158	−39.6		−47.6		21.0		19.0		18.2		26.2
		3	−9.0	−60.2	−13.0	−73.2	−71.0		−40.2		53.0		14.4		72.4		18.8
		6	−9.8	−66.2	−13.8	−104	−35.4		−42.2		15.8		14.4		14.0		20.6
		9	−7.6	−50.8	−14.2	−116	−36.6		−43.4		21.2		15.0		15.0		22.0
		12	−7.2	−60.4	−14.8	−140	−38.8		−45.8		24.2		16.4		17.4		24.4
Left	GYRO	0	−3.4	1.2	4.8	58.8	−39.4	−34.2	−74.0		32.8	36.4	83.6		20.8	19.2	106
		3	−5.2	0.4	12.0	70.2	−34.4	−27.8	−48.0		23.8	28.6	72.0		12.8	6.2	68.4
		6	−3.0	3.2	13.4	76.8	−34.4	−28.6	−53.4		28.6	34.8	80.0		13.0	11.8	81.8
		9	−2.6	3.6	13.4	72.0	−36.0	−29.4	−55.8		30.8	36.4	82.6		15.2	14.2	86.8
		12	−2.6	3.6	14.2	64.8	−38.2	−30.8	−55.4		33.0	38.2	84.0		19.6	17.4	88.0
	ACC	0	−11.0	−52.0	−10.4	−125	−81.2		−50.2		59.2		29.6		88.8		28.8
		3	−14.4	−60.2	−16.8	−39.8	−82.6		−86.8		54.0		53.4		85.2		88.6
		6	−13.2	−61.6	−13.6	−46.0	−81.0		−41.2		54.8		14.0		84.2		19.8
		9	−11.4	−54.2	−12.6	−77.4	−80.6		−42.0		57.6		16.8		86.6		20.4
		12	−11.0	−49.6	−12.6	−87.2	−80.8		−44.2		59.0		18.8		88.2		22.6

GYRO, gyroscope signal; ACC, accelerometer signal.