Magnitude of the ground reaction force vector (GRF_Magnitude), mediolateral component of the GRF (GRF_ML) and lever arm of the GRF acting about the knee joint at the frontal plane (Lever Arm Frontal_Knee) while incline walking determined before (pre) and after (post) t

The x-axis was normalized from 0 to 100% of a stride cycle. The vertical solid lines represent the instants of touchdown (TD) and take off (TO) of the left and right foot. DS: double support phase; SSL: single support phase of the analyzed left leg. Lateral-medial Lever Arm FrontalKnee refers to the position of the line of action of the GRF relative to the knee joint centre. Lever Arm FrontalKnee was not determined for the first and last 10% of the support phase because of the low GRFs and the consequently unreliable calculation of Lever Arm FrontalKnee. *: Statistically significant differences between pre and post (P<0.05).