期刊
JOURNAL OF THE AMERICAN GERIATRICS SOCIETY
卷 65, 期 7, 页码 1514-1520出版社
WILEY
DOI: 10.1111/jgs.14829
关键词
mobility; life-space; cognition; older adults; Mexican Americans
资金
- UTMB Claude Pepper Center from the National Institute of Aging [P30-AG024832]
- [R01-AG017638]
- [R01-AG010939]
- [R03 AG04640902]
- [R01MD010355]
OBJECTIVES: To examine the association between life-space mobility and cognitive decline over a five-year period among older Mexican Americans. DESIGN: Longitudinal study. SETTING: Hispanic Established Population for the Epidemiologic Study of the Elderly survey conducted in the southwestern of United States (Texas, Colorado, Arizona, New Mexico, and California). PARTICIPANTS: Four hundred thirty-two Mexican Americans aged 75 and older with normal or high cognitive function at baseline. MEASUREMENTS: Socio-demographic factors, living arrangement, type of household, social support, financial strain, self-reported medical conditions, Mini-Mental State Examination (MMSE), depressive symptoms, activities of daily living (ADLs), and Short Physical Performance Battery. Life-space assessment (LSA) during the past 4 weeks was assessed during in-home interview. Scores ranged from 0 (daily restriction to the bedroom) to 120 (daily trips outside of their own town without assistance) and categorized as 0 to 20, 21 to 40, 41 to 60, 61 to 80, and 81 to 120. Because of the small sample size in the category of 81 to 120, the two highest categories were combined into a single group. RESULTS: The mean LSA score and MMSE score of participants at baseline was 44.6 (Standard Deviation [SD], 20.7) and 25.7 (SD, 3.2), respectively. Mixed Model analyses showed that participants in the highest life-space category (>= 61) experienced slower rates of cognitive decline over time compared to participants in the lowest category (0 to 20) (beta = 1.03, Standard Error [SE] = 0.29, P = 0.0004), after adjusting for all covariates. CONCLUSION: Greater life-space mobility at baseline was predictor of slower rates of cognitive decline over 5 years in older Mexican Americans.
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