The high-intensity subgroup intervention to walk faster than at baseline casual speed (as fast as you can safely) during three 30-minute sessions weekly over 4 months yielded walking a longer 6-minute distance at follow-up compared to the control subgroup that continuously followed the prompt to walk at casual speed (relaxed and comfortable pace) with equivalency in sessions. Functional improvement was solely measured by that final distance outcome. As the 6-minute walking distance test was not accompanied by instructions to maximize cadence and distance, as it is self-paced and known to reflect sub-maximal functional capacity, it may be that the difference in distance, on average about 20% farther distance for the high-intensity subjects, was at least partly as a result of having simply been primed to increase cadence and not necessarily having attaining some overall functioning improvement by having been trained to walk faster. None of a few other functional capacity measures taken at baseline were compared at follow up.