Gait parameter targets A, B, and C (filled shapes) and individual resultant gait parameters for each subject (open shapes), error bars represent ± 1 SD centered on the group mean (group mean not shown); light gray X’s represent parameters from self-selected fast, natural, and slow gait (Bhatt et al., 2005). bh is the subject’s body height. * Target for the initial 7 subjects was 0.47; analysis revealed that the subjects could not consistently reach this target, so the target was adjusted to 0.4 for the remaining 11 subjects.