Fig. 3

Assessment of treatment and period effects for Foot Function Index (FFI-R) pain a and stiffness subscales b. Values are presented as percentages of the maximum scores for each subscale, and lower scores indicate less foot pain and foot stiffness. Dotted lines indicate mean values for participants receiving the lateral wedges alone first, followed by the lateral wedges plus arch support; solid lines indicate mean values for participants receiving the lateral wedges plus arch support first, followed by the lateral wedges alone