Document Type

Article

Publication Date

1-1-2016

Comments

This article has been peer reviewed. It is the authors' final version prior to publication in Alzheimer Disease and Associated Disorders

Volume 30, Issue 1, Jan-March 2016, Pages 41-46.

The published version is available at DOI: 10.1097/WAD.0000000000000096. Copyright © Wolters Kluwer

Abstract

Engaging in cognitive, social, and physical activities may prevent cognitive decline. In a sample of older African Americans with mild cognitive impairment (MCI; N=221), we investigated the cross-sectional relationships between activity levels and participants' demographic, clinical, and neuropsychological characteristics. The average age of participants was 75.4 years (SD, 7.0); 177 (80.1%) were women. Participation in cognitive/social activities was positively associated with education, depression, literacy, mobility, instrumental activities of daily living (IADL), verbal learning, and subcomponents of executive function. A linear regression identified IADLs, education, depression, and verbal learning as independent predictors. Participation in physical activities was positively associated with sex, depression, IADLs, and subcomponents of executive function. An ordinal regression identified executive function and depression as independent correlates. These data suggest that unique characteristics are associated with cognitive/social and physical activities in older African Americans with MCI. These characteristics, coupled with low activity levels, may increase the risk of progression from MCI to dementia. Culturally relevant behavioral interventions to reduce cognitive decline in this high-risk population are needed.

Table 1. Average Neuropsychological Test Scores of the Study Sample (n = 221).pdf (88 kB)
Table 1. Average Neuropsychological Test Scores of the Study Sample (n = 221)

Table 2. Demographic and Clinical Characteristics (N = 221).pdf (90 kB)
Table 2. Demographic and Clinical Characteristics (N = 221) by Cognitive/Social Activity Level (Florida Cognitive Activity Scale)

Table 3. Regression results Baseline Variables associated.pdf (65 kB)
Table 3. Regression results: Baseline Variables associated with Florida Cognitive Activity Scale Scores.

Table 4. Ordinal Regression Results Predicting Physical Activity Level (n = 221).pdf (85 kB)
Table 4. Ordinal Regression Results Predicting Physical Activity Level (n = 221)

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