Inclusion Criteria:  Age between 65 and 90 years old Presence of at least 1 characteristic of the Fried frailty criteria Mini-mental state examination score equal to or more than 24 Montreal Cognitive Assessment score less than 26 Ability to walk independently for 1 min without assistive devices  Exclusion Criteria:  Central nervous system disorders (such as stroke, Parkinson's disease, spinal cord injury) Any unstable physical condition, psychiatric disorder, and other neurological disorder or diagnosed with learning disability which may affect participating this study