Effects of Walking Exercise on Sleep Quality in Older Adults

Inclusion Criteria: * Age between 60 and 80 * Montreal Cognitive Assessment score \> 26 * Pittsburgh Sleep Quality Index score \> 5 * Not participated in any regular exercise program in the past 3 months * Being able to understand and follow the exercise program Exclusion Criteria: * Suffering from any neurological or musculoskeletal disorders * Visual problems * Geriatric Depression Scale score ≥ 6 * Vestibular disease or vestibular dysfunction * Being unable to walk independently due to neuromuscular or musculoskeletal limitations * A history of mental illness * Untreated obstructive sleep apnea * A history of electroconvulsive therapy or severe head injury leading to prolonged unconsciousness * A history of alcoholism or dependence within the past 2 years * A history of cancer within the past 5 years * Any major systemic diseases, unstable medical conditions (such as insulin-dependent diabetes or uncontrolled diabetes, uncontrolled hypertension (systolic pressure \> 170 or diastolic pressure \> 100 mmHg)), * Taking medications that affect the central nervous system, balance, coordination, or sleep (such as antidepressants, vestibular sedatives or anxiolytics, sleep aids)