Exploring racial and diagnostic differences in motor performance along the Alzheimer's disease continuum: Insights from the ARMADA study

Contrary to expectation, Black older adults exhibited better balance than White, though missing values were highest for this measure. Motor decline was primarily observed in individuals with DAT, who performed worse on fine motor dexterity, grip strength, endurance, and balance compared to NC and aMCI groups. These findings suggest that motor difficulty may serve as a marker of DAT, while NIHTB-MB performance in aMCI remains largely preserved. Thus, more sensitive metrics, such as dual task conditions, may better characterize early motor changes in aMCI.