Kinematic and EMG Responses to Pelvis and Leg Assistance Force during Treadmill Walking in Children with Cerebral Palsy

Figure 2

Displacement of the center of the pelvis in the mediolateral direction while subjects walking on a treadmill. (a) Displacement of the center of the pelvis from one child with CP with no load, that is, baseline, with pelvis assistance, and leg assistance. Displacements of the center of the pelvis shown in the figure were average of 10 strides for each condition. Gray curves located at the top and the bottom indicated the trajectories of the left and right feet during treadmill walking. All the displacements of the center of the pelvis were normalized to the gait cycle, starting from heel strike of the right leg. “” indicates the minimal distance in the mediolateral direction between the center of the pelvis and supporting leg during stance. (b) Group average of the minimal distance between the center of the pelvis and supporting leg across 9 subjects at 4 different loading conditions. The bar and error bar indicate the mean and standard deviation of the minimal distance across 10 subjects for each loading condition. Asterisk () indicates significant effect of loading conditions.

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