Figure 3. Lower-extremity kinematics in the sagittal, frontal and horizontal planes during the single-leg drop landing. Ensemble curves for the mean of the joint angle in patients with chronic ankle instability (red), individuals coping with a lateral ankle sprain (green) and controls (blue) in normal (solid line) and fatigue (dotted line) conditions. The black vertical line denotes the initial contact on a force plate and distinguishes the pre-landing and post-landing phases. CAI: chronic ankle instability; CON: controls; COP: copers.