Ankle kinematics during the 4 testing conditions. (A) Average profile of ankle plantarflexion-dorsiflexion for five gait cycles of the No AFO condition (i.e. shoes only). The larger dashed vertical line represents the instance of toe-off and the lighter dashed vertical lines separate four different sub-phases of ankle function during the gait cycle (see text for details). (B) Average profiles of ankle plantarflexion-dorsiflexion for five gait cycles of the four testing conditions. Panels C - F show the mean (± SD) range of motion (RoM) in ankle plantarflexion-dorsiflexion for the four sub-phases illustrated in panel A for each of the four AFO conditions.