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dc.contributor.authorCerin, Ester
dc.contributor.authorBarnett, Anthony
dc.contributor.authorShaw, Jonathan E.
dc.contributor.authorMartino, Erika
dc.contributor.authorKnibbs, Luke D.
dc.contributor.authorTham, Rachel
dc.contributor.authorWheeler, Amanda J.
dc.contributor.authorAnstey, Kaarin
dc.date.accessioned2022-02-23T11:48:26Z
dc.date.available2022-02-23T11:48:26Z
dc.date.issued2021-12-23
dc.description.abstract<p><b>Background: </b> There is a dearth of studies on the effects of the neighbourhood environment on adults’ cognitive function. We examined how interrelated aspects of the built and natural neighbourhood environment, including air pollution, correlate with adults’ cognitive function, and the roles of physical activity and sedentary behaviours in these associations. <p><b>Methods:</b> We used data from 4,141 adult urban dwellers who participated in the Australian Diabetes, Obesity and Lifestyle 3 study on socio-demographic characteristics, neighbourhood self-selection, physical activity and seden- tary behaviours, and cognitive function. Neighbourhood environmental characteristics included population density, intersection density, non-commercial land use mix, and percentages of commercial land, parkland and blue space, all within 1 km residential buffers. We also calculated annual mean concentrations of NO2 and PM2.5. Generalised addi- tive mixed models informed by directed acyclic graphs were used to estimate the total, direct and indirect effects of environmental attributes on cognitive functions and the joint-significance test was used to examine indirect effects via behaviours. <p><b>Results:</b> In the total effects models, population density and percentage of parkland were positively associated with cognitive function. A positive association of PM<sub>2.5</sub> with memory was also observed. All neighbourhood environmen- tal attributes were directly and/or indirectly related to cognitive functions via other environmental attributes and/ or physical activity but not sedentary behaviours. Engagement in transportation walking and gardening frequency partially mediated the positive effects of the neighbourhood environment on cognitive function, while frequency of transportation walking mediated the negative effects. <p><b>Conclusions:</b> In the context of a low-density country like Australia, denser urban environments with access to park- land may benefit residents’ cognitive health by providing opportunities for participation in a diversity of activities. A more fine-grained characterisation of the neighbourhood environment may be necessary to tease out the negative and positive impacts of inter-related characteristics of urban neighbourhood environments on cognitive function. <p><b>Keywords:</b> walkability, greenspace, blue space, physical activity, sedentary behaviours, cognitive functionen_US
dc.identifier.citationCerin, Barnett, Shaw, Martino, Knibbs, Tham, Wheeler, Anstey. From urban neighbourhood environments to cognitive health: a cross-sectional analysis of the role of physical activity and sedentary behaviours. BMC Public Health. 2021;21(1):1-15en_US
dc.identifier.cristinIDFRIDAID 1998782
dc.identifier.doi10.1186/s12889-021-12375-3
dc.identifier.issn1471-2458
dc.identifier.urihttps://hdl.handle.net/10037/24116
dc.language.isoengen_US
dc.publisherBMCen_US
dc.relation.journalBMC Public Health
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.titleFrom urban neighbourhood environments to cognitive health: a cross-sectional analysis of the role of physical activity and sedentary behavioursen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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