This interventional study will investigate the effects of stroboscopic visual conditions on gait patterns and lower limb muscle activation in adults with chronic ankle instability (CAI). CAI often results in impaired sensorimotor control, leading to altered gait strategies such as slower walking speed, shorter step length, and increased visual reliance. Stroboscopic glasses intermittently restrict visual input, potentially reducing visual dependence and enhancing proprioceptive feedback.
Participants will complete walking trials under three randomized visual conditions: high-frequency stroboscopic, low-frequency stroboscopic, and no-glasses control. Gait parameters will be measured using the GAITRite system, and surface electromyography (sEMG) will record activation of the tibialis anterior, peroneus longus, and gastrocnemius muscles. Findings may provide insight into sensorimotor adaptation mechanisms and inform rehabilitation strategies to improve functional stability in individuals with CAI.
Individuals with a Cumberland Ankle Instability Tool (CAIT) score of less than 24
Individuals diagnosed with ankle sprain or instability within the past 6 months
Individuals who have undergone lower limb surgery or experienced a fracture due to ankle trauma within the past 6 months
Individuals with systemic diseases, such as cardiovascular disorders, that may affect balance
Individuals who have difficulty understanding or following instructions during assessment or training