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Article Publish Status: FREE
Abstract Title:

Association between exercise and the risk of dementia: results from a nationwide longitudinal study in China.

Abstract Source:

BMJ Open. 2017 Dec 4 ;7(12):e017497. Epub 2017 Dec 4. PMID: 29208615

Abstract Author(s):

Zi Zhou, Jian Fu, Y Alicia Hong, Ping Wang, Ya Fang

Article Affiliation:

Zi Zhou

Abstract:

OBJECTIVE: This study was conducted to examine the causal association between exercise and the risk of dementia among older Chinese adults.

DESIGN: Longitudinal population-based study with a follow-up duration of 9 years.

SETTING: Data for the Chinese Longitudinal Healthy Longevity Survey waves occurring from 2002 to 2011-2012 were extracted from the survey database.

PARTICIPANTS: In total, 7501 dementia-free subjects who were older than 65 years were included at baseline. Dementia was defined as a self-reported or proxy-reported physician's diagnosis of the disease.

OUTCOME MEASURES AND METHODS: Regular exercise and potential confounding variables were obtained via a self-report questionnaire. We generated longitudinal logistic regression models based on time-lagged generalised estimating equation to examine the causal association between exercise and dementia risk.

RESULTS: Of the 7501 older Chinese people included in this study, 338 developed dementia during the 9-year follow-up period after excluding those who were lost to follow-up or deceased. People who regularly exercised had lower odds of developing dementia (OR=0.53, 95% CI 0.33 to 0.85) than those who did not exercise regularly.

CONCLUSION: Regular exercise was associated with decreased risk of dementia. Policy-makers should develop effective public health programmes and build exercise-friendly environments for the general public.

Study Type : Human Study

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