Comparison of Resistance Training With and Without Plyometric Exercises on Athletes With Chronic Ankle Instability.

Inclusion Criteria: * A history of at least 1 substantial ankle sprain with associated inflammatory symptoms and at least 1 interrupted day of desired physical activity, multiple episodes of the ankle "giving way," recurrent sprain, and "feelings of instability" in the 6 months before the study. Patients scoring the FAAM, there should be two scores, less than the ADL subscale and the Sports subscale, 20/21 items and 7/8 items must be completed, respectively * If both ankles qualified, the ankle with the highest score (i.e. the most severely affected ankle) was considered the involved limb. Exclusion Criteria: * Volunteers were excluded if they had sustained an acute lower extremity injury in the 3 months before the study * Having participated in formal rehabilitation in the 3 months before the study * Having a history of lower extremity surgery or fracture that required alignment in the involved limb * Having any diagnosed neurologic dysfunction, such as multiple sclerosis, Parkinson disease, or head injury.