Relationship Between Isokinetic Hip Muscles Performance Parameters and Balance in Patients With Chronic Ankle Instability

Inclusion Criteria: 1. Age range between 18 and 40 years from both genders. 2. Had a history of at least one significant lateral ankle sprain to the same side that resulted in pain and loss of function of more than one day. 3. Had a history of at least two episodes of 'giving way' in the past six months. 4. Each member of the CAI group will require to answer yes to at least 5 questions on the Ankle Instability Instrument (AII) questionnaire and score 24 on the Cumberland Ankle Instability Tool (CAIT) Exclusion Criteria: 1. A history of neural or vestibular disorders. 2. Previous lower limb surgeries 3. Trauma to the lower limbs for at least 3 months prior to the study; 4. Physiotherapy within the last 3 months or current participation in supervised physical rehabilitation. 5. Consumed drugs or alcohol within 24 hours prior to testing that could interfere with performance.