Age, vascular risk, and cognitive decline in an older, British, African-Caribbean population.
Abstract
OBJECTIVES: To investigate associations between baseline factors and subsequent cognitive decline in an older African-Caribbean population. DESIGN: Three-year follow-up of a community sample. SETTING: Registration lists for seven primary care services in south London, United Kingdom. PARTICIPANTS: Of 290 Caribbean-born people aged 55 to 75 recruited at baseline, 216 (75%) were reinterviewed after a 3-year period. Sufficient data for analysis were present for 207. MEASUREMENTS: Tests of verbal memory (immediate and delayed), orientation, and attention were administered at baseline and at 3 years. A composite measure of cognitive change was derived through factor analysis. Participants in the lowest quintile were defined as having cognitive decline and were compared with the rest of the sample with respect to baseline characteristics. RESULTS: Cognitive decline was strongly associated with increased age, but not with sex, education, or occupation. It was also not directly associated with hypertension, diabetes mellitus, or exercise, but the age-decline association was significantly stronger in people with diabetes mellitus and was lower in those reporting vigorous physical exercise at baseline. When cognitive decline was investigated separately for individual tests, both these patterns of association were particularly strong for decline in delayed verbal recall. CONCLUSION: The association between increased age and cognitive decline, particularly decline in verbal recall, was stronger in people with diabetes mellitus (but not hypertension) and weaker in people who were more physically active.
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In older adults, aerobic exercise was associated with improved performances in episodic memory tasks.
“Some human studies have focussed on assessing the influence of AE on hippocampus dependent cognition and shown in older adults that AE was associated with improved performances in both episodic (Richards et al., 2003; Stewart et al., 2003; Sabia et al., 2009; Flöel et al., 2010; Ruscheweyh et al., 2011) and spatial (Erickson and Kramer, 2009; Erickson et al., 2010, 2011) memory tasks as well as in”
From Aerobic Exercise as a Tool to Improve Hippocampal Plasticity and Function in Humans: Practical Implications for Mental Health Treatment (2016) · cites this paper as Stewart et al., 2003
Only three studies explicitly reported that data were collected without the examiner being aware of the diabetes status of the participant.
“Only three studies explicitly reported that data were collected without the examiner being aware of the diabetes status of the participant [46, 51, 62].”
From Cognitive decline and dementia in diabetes—systematic overview of prospective observational studies (2005) · cites this paper as [62]
Six studies used the MMSE or 3MS and two studies used the DSS to classify participants into those who did and did not experience cognitive decline.
“Table 3, and Figs. 1 and 2 list and display results from the six studies that used the MMSE or 3MS [47 -51, 54, 62, 69] and the two studies that used the DSS [51, 54] to classify participants into those who did and did not experience cognitive decline.”
From Cognitive decline and dementia in diabetes—systematic overview of prospective observational studies (2005) · cites this paper as [62]
In one study, the non-significant reduced risk was only noted in young participants, while findings in older participants were consistent with other studies.
“In one study, this finding was only noted in young participants, while findings in older participants were consistent with the results from the other studies [62].”
From Cognitive decline and dementia in diabetes—systematic overview of prospective observational studies (2005) · cites this paper as [62]
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- Authors
- Stewart, R., Prince, M., & Mann, A.
- Affiliations
- King's College London (GB)
- Corresponding author
- Stewart, Robert
- Venue
- Journal of the American Geriatrics Society
- Publisher
- Wiley
- Published
- 2003-10-24
- Volume
- 51
- Issue
- 11
- Pages
- 1547-1553
- ISSN
- 0002-8614 (ISSN-L)
- 1532-5415
- OpenAlex
- W1593149262
- Cited by
- 45
- References
- 33
- Citations by year
- 2024: 1 · 2023: 1 · 2022: 2 · 2021: 2 · 2018: 3 · 2017: 2 · 2016: 4 · 2015: 1 · 2014: 1 · 2013: 3 · 2012: 1
- FWCI
- 1.22
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of the American Geriatrics Society (publishedVersion)
- PubMed (publishedVersion)
- Research Portal (King's College London) (submittedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Social Sciences › Psychology › Neuropsychology and Physiological Psychology › Aging and Gerontology Research
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
- Keywords
- cognitive decline, age, vascular risk factors, diabetes mellitus, hypertension, physical activity, verbal memory, delayed recall, primary care population
- MeSH terms
- Age Factors, Aged, Analysis of Variance, Cognition Disorders, Diabetes Mellitus, Female, Follow-Up Studies, Humans, Hypertension, London, Male, Middle Aged, Geriatric Assessment, Caribbean Region, Black People
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