Estimation of pelvis kinematics in level walking based on a single inertial sensor positioned close to the sacrum: validation on healthy subjects with stereophotogrammetric system

Table 6 Comparison of mean and standard deviation of angular ranges as provided by F4A and GA

Range	Self-selected			Slow			Fast
	F4A	GA	p-Values	F4A	GA	p-Values	F4A	GA	p-Values
Tilt	3.52(1.08)	3.26(1.14)	0.25	3.08(1.18)	2.88(1.19)	0.38	4.78(2.10)	3.90(0.89)	0.09
Obliquity	8.50(2.67)	8.48(3.25)	0.91	6.50(3.43)	6.82(3.16)	0.31	10.21(3.46)	9.49(3.66)	0.03*
Rotation	11.70(5.17)	11.78(5.15)	0.83	7.55(3.36)	10.13(3.35)	<0.001*	15.10(6.53)	14.48(5.31)	0.27

Range of motion as estimated by the F4A, and calculated by GA: mean and standard deviation over all subjects but for the second trial only (Trial 2 in Figure 5), together with corresponding p-values from the t-test: those significant are marked with *. This is reported for each of the three walking speeds, and each of the three angles. Unit is degree.

ISSN: 1475-925X