Clinical Research Directory

Inclusion Criteria: * Being an adolescent male volleyball player between the ages of 13-18. * Having attended volleyball training regularly for at least one year. * Agreeing to attend training regularly throughout the study period. * Having signed the voluntary participation form and parental consent form. * Having no visual or auditory impairments. * Having completed cognitive function tests during the initial evaluation. Exclusion Criteria: * Having a history of a disease that could affect neurological, psychiatric, or cognitive functions. * Individuals whose use of glasses, contact lenses, or eye health prevents them from using stroboscopic glasses. * Having had a head, neck, or serious lower/upper extremity injury within the last 6 months. * Regular use of any medication (especially medications that affect attention/cognitive functions). * Individuals who declared they were unable to comply with the study process or who did not participate in follow-up assessments. * Individuals who did not comply with the research protocol during testing or whose data were incomplete.