“…Burnfield et al [3] conducted a study to examine the difference in RCOF among young, healthy elderly, and elderly subjects with diabetes mellitus, lower extremity arthritis and unilateral stroke. No significant differences were found between any of these groups, in agreement with Durá et al [4]. The lack of significant differences in RCOF among subject groups suggested that individuals with the selected medical conditions were at no greater risk of slipping when walking at a self-selected step than were healthy older or younger adults.…”