Biomechanics and energetics of walking in powered ankle exoskeletons using myoelectric control versus mechanically intrinsic control

Table 2 Resulting mean gait kinematics of each walking bout

Walking condition	Step length	Step width	Step period	Double support period
	(Normalized)	(Normalized)	(ms)	(ms)
Unpowered	0.713 ± 0.010	0.173 ± 0.011	586.3 ± 5.6	161.7 ± 5.0
Timing-Based	0.704 ± 0.007	0.190 ± 0.016	591.6 ± 6.9	167.2 ± 2.8
Proportional Myoelectric	0.692 ± 0.008	0.182 ± 0.014	586.5 ± 6.6	169.0 ± 2.2
P-Value	0.004	0.030	0.095	0.256

All values are reported as mean ±s.e.m. across subjects. All distance measurements have been normalized by leg length. P <0.05 represents a statistically significant difference between the proportional myoelectric controller and the timing-based controller

ISSN: 1743-0003