. 2015 Jun 11;2(1):e6. doi: 10.2196/rehab.4102

Table 3.

Mean and standard deviation of the records of each of the sensors and differences between them.

	Trunk (SD)			Lumbar (SD)			Mean difference (SD)
	X	Y	Z	X	Y	Z	X	Y	Z
Resultant displacement	34.92 (7.02)			37.06 (14.75)			1.86^a (23.64)
Speed mean	1.79 (0.27)	25.44 (7.84)	24.59 (8.73)	1.68 (0.67)	22.39 (7.42)	19.42 (5.03)	0.11^a (0.74)	3.05^a (1.97)	5.17^a (8.43)
Speed maximum	-0.57 (0.70)	10.06 (3.97)	9.38 (1.42)	1.48 (0.94)	9.76 (6.14)	8.11 (1.07)	-2.05^a (0.62)	0.30^b (3.51)	-1.27^b (1.74)
Speed minimum	-2.19 (0.73)	-15.79 (2.81)	-13.10 (7.49)	1.19 (1.16)	-14.18 (4.43)	-12.28 (3.86)	-3.38^a (1.19)	1.61^b (4,07)	-0.82^b (9.21)
Resultant speed maximum	13.80 (4.22)			13.19 (4.70)			-0.61ª (4.41)
Resultant speed minimum	20.55 (5.61)			19.01 (4.18)			-1.54^a (2.74)
Aceleration mean	2.34 (1.21)	3.03 (1.27)	6.53 (1.32)	1.39 (1.01)	0.43 (3.38)	5.27 (1.84)	0.95^a (0.98)^c	2.60^b (3.83)	1.26^b (1.96)
Aceleration maximum	0.73 (0.81)	2.19 (3.07)	95.40 (8.54)	0.43 (0.29)	2.34 (2.13)	90.94 (5.09)	0.30^a (1.43)	-0.15^b (3.79)	4.46^a (6.05)
Aceleration minimum	-2.42 (2.26)	4.33 (2.72)	88.88 (9.58)	1.84 (1.17)	2.97 (3.07)	84.11 (7.07)	-4.26^b 3.18)	1.36^a (2.81)^d	4.77^b (6.18)
Resultant acceleration maximum	88.17 (10.23)			89.51 (8.69)			-1.34^b (4.84)
Resultant acceleration minimum	90.19 (9.28)			88.71 (7.91)			1.48^a (5.71)

^aDifferences calculated through Student t test (parametric distribution of the sample).

^bDifferences calculated through Wilcoxon’s test (nonparametric distribution of the sample).

^c P=.02.

^d P=.03.