Sizhen Su1, Le Shi1, Yongbo Zheng2, Yankun Sun1, Xiaolin Huang1, Anyi Zhang1, Jianyu Que1, Xinyu Sun1, Jie Shi3, Yanping Bao4, Jiahui Deng1, Lin Lu1,2. 1. Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China. 2. Peking-Tsinghua Center for Life Sciences and PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing 100191, China. 3. National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing 100191, China. 4. National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing 100191, China baoyp@bjmu.edu.cn.
Abstract
OBJECTIVES: Leisure activities are major components of modifiable and healthy lifestyles and are proposed to help prevent the development of dementia. This study aimed to assess the effects of different types of leisure activities, including cognitive, physical, and social activities, on the incidence of all-cause dementia (ACD), Alzheimer's disease (AD), and vascular dementia (VD). METHODS: We performed a systematic review and meta-analysis of the Cochrane, PubMed, Embase, and Web of Science databases to identify longitudinal studies that examined associations between leisure activities and dementia. Relative risks (RRs) and 95% confidence intervals (95% CI) were pooled using random-effects meta-analysis. Subgroup analyses were used to estimate potential effect modifiers. The study was registered with PROSPERO (CRD42019116857). RESULTS: A total of 38 longitudinal studies, with 2154818 participants at baseline, 74700 ACD cases, 2848 AD cases, and 1423 VD cases during follow-up, were included in the meta-analysis. The subgroup analyses showed that physical (RR = 0.83, 95% CI: [0.78-0.88]), cognitive (RR = 0.77 [0.68-0.87]), and social (RR = 0.93 [0.87-0.99]) activities were inversely associated with incidence of ACD. In addition, physical (RR = 0.87 [0.78-0.96]) and cognitive (RR = 0.66 [0.52-0.85]) activities were related with a reduced risk of AD. Physical activity (RR = 0.67 [0.53-0.85]) was associated with a lower incidence of VD. CONCLUSION: Our findings suggest that leisure activities are inversely associated with risk of ACD, AD and VD.
OBJECTIVES: Leisure activities are major components of modifiable and healthy lifestyles and are proposed to help prevent the development of dementia. This study aimed to assess the effects of different types of leisure activities, including cognitive, physical, and social activities, on the incidence of all-cause dementia (ACD), Alzheimer's disease (AD), and vascular dementia (VD). METHODS: We performed a systematic review and meta-analysis of the Cochrane, PubMed, Embase, and Web of Science databases to identify longitudinal studies that examined associations between leisure activities and dementia. Relative risks (RRs) and 95% confidence intervals (95% CI) were pooled using random-effects meta-analysis. Subgroup analyses were used to estimate potential effect modifiers. The study was registered with PROSPERO (CRD42019116857). RESULTS: A total of 38 longitudinal studies, with 2154818 participants at baseline, 74700 ACD cases, 2848 AD cases, and 1423 VD cases during follow-up, were included in the meta-analysis. The subgroup analyses showed that physical (RR = 0.83, 95% CI: [0.78-0.88]), cognitive (RR = 0.77 [0.68-0.87]), and social (RR = 0.93 [0.87-0.99]) activities were inversely associated with incidence of ACD. In addition, physical (RR = 0.87 [0.78-0.96]) and cognitive (RR = 0.66 [0.52-0.85]) activities were related with a reduced risk of AD. Physical activity (RR = 0.67 [0.53-0.85]) was associated with a lower incidence of VD. CONCLUSION: Our findings suggest that leisure activities are inversely associated with risk of ACD, AD and VD.
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