Cognitive leisure activities and their role in preventing dementia: a systematic review.
BACKGROUND
Dementia is a debilitating syndrome that inflicts a tremendous burden of care on one's family, individual caregivers, health care professionals and on the use of resources. Existing therapeutic interventions can only help control or reduce symptoms, and slow the disease's progression. Identifying protective factors or effective prevention strategies would result in considerable benefits. Participation in cognitive leisure activities has been implicated as a possible prevention strategy.


OBJECTIVE
The objective of the review was to establish best practice in relation to cognitive leisure activities in preventing dementia among older adults.


METHODS
Randomised controlled trials (RCTs), other experimental studies, cohort studies, case-controlled studies and cross-sectional studies were considered for the review.Participants of interest were adults aged 60 years and older with or without a clinical diagnosis of dementia, living in the community or residential care setting.The review focussed on any cognitive leisure activity that required a mental response from the individual taking part in the activity e.g. reading and playing board games.The primary outcome of the review was the presence or absence of dementia, determined by cognitive function tests, mental examination scores, DSM classification (Diagnostic and Statistical Manual of Mental Disorders), and other valid dementia diagnostic tools.


METHODS
A search for published and unpublished literature in the English language was conducted using all major electronic databases. There was no publication date restriction. A three-step search strategy was developed using MeSH terminology and keywords to ensure that all material relevant to the review was captured.
The methodological quality of included studies was assessed by two reviewers, who appraised each study independently, using standard Joanna Briggs Institute (JBI) critical appraisal tools.


METHODS
Data was extracted from the studies that were identified as meeting the criteria for methodological quality using the standard JBI data extraction tools. Due to the heterogeneity of populations and interventions, meta-analyses were not possible and results are presented in narrative form.


RESULTS
Thirteen longitudinal studies were included in the review. Studies were grouped by stage of adult life participation when interventions were undertaken i.e. early-middle adulthood and late life. Five out of six studies demonstrated a positive association between engagement in activities and a reduced risk of developing Alzheimer's disease (AD) when interventions were undertaken in middle adulthood and six out of seven studies produced a positive association for late life participation. Results indicated that some activities might be more beneficial than others.Actively participating in cognitive leisure activities during mid or late life may be beneficial in preventing the risk of dementia in the elderly however the evidence is currently not strong enough to infer a direct causal relationship.Participating in selected cognitive leisure activities may be more favourable than others but currently there is no strong evidence to recommend one over the other.
1. The National Evidence Based Aged Care Unit (NEBACU), Adelaide Australia: a Collaborating Centre of The Joanna Briggs Institute 2. The Joanna Briggs Institute, Adelaide Australia.
Cindy
C
Stern
Zachary
Z
Munn