A Study of Dual-task Exercise Training to Prevent Falls Among Older Adults With Mild Cognitive Impairment

Inclusion Criteria: * being 65 years and older * having complaint of memory loss * scoring ≤0.5 on Clinical Dementia Scale * having had 1 or more falls in the preceding 12 months or scoring ≥12 seconds on the Timed Up and Go test Exclusion Criteria: * scoring \<24 on the Mini-Mental State Examination * being able to ambulate independently for household distances * having medical clearance * having participated in any regular and structured tai ji quan-based exercise programs (≥2 times weekly) in the preceding 6 months * having a progressive neuromuscular disorder such as Parkinson's disease or multiple sclerosis * being unwilling to be randomized