Figure 4From: Ankle voluntary movement enhancement following robotic-assisted locomotor training in spinal cord injuryIndividual changes in dorsi-flexor muscle strength after training. Percentage increase in the dorsi-flexion maximal voluntary contraction (MVCDF) at the posttest normalized by the pretest value for each subject. Subjects showing an improvement in the MVCDF are represented by black symbols. White symbols represent the subjects experiencing no change over time.Back to article page