Relative changes in primary outcome variables in less-impaired and more-impaired participants following UTT. Less-impaired participants (n = 6) achieved WISCI-II scores from 13 to 18 and more-impaired participants (n = 5) achieved WISCI-II scores from 6 to 11. LS, leg strength; BL, balance; PWS, preferred walking speed; RWS, rapid walking speed, 6MWD, 6-min walk distance, and DSA, daily step activity.