Data Analysis : Descriptive statistics will be calculated for all demographic data including age, height, weight, time since onset Fugl Meyer lower extremity assessment score and AFO preference. Differences in gait endurance will be analyzed using a 2x2 repeated measures ANOVA Differences in gait symmetry, and gait velocity between the two AFO conditions and two practice conditions will be analyzed using two separate 2x2 repeated measures MANOVA. If assumption of sphericity is not met, Greenhouse-Geisser statistic will be used. An alpha level of .05 will be used to determine significance of differences, with a Bonferroni correction applied as needed to protect against Type I error.