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Green and blue spaces and physical functioning in older adults: Longitudinal analyses of the Whitehall II study

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dc.contributor.author de Keijzer, Carmen
dc.contributor.author Tonne, Cathryn
dc.contributor.author Sabia, Severine
dc.contributor.author Basagaña Flores, Xavier
dc.contributor.author Valentín, Antònia
dc.contributor.author Singh-Manoux, Archana
dc.contributor.author Antó i Boqué, Josep Maria
dc.contributor.author Alonso Caballero, Jordi
dc.contributor.author Nieuwenhuijsen, Mark J.
dc.contributor.author Sunyer Deu, Jordi
dc.contributor.author Dadvand, Payam
dc.date.accessioned 2019-04-08T07:27:37Z
dc.date.available 2019-04-08T07:27:37Z
dc.date.issued 2019
dc.identifier.citation de Keijzer C, Tonne C, Sabia S, Basagaña X, Valentín A, Singh-Manoux A. et al. Green and blue spaces and physical functioning in older adults: Longitudinal analyses of the Whitehall II study. Environ Int. 2019 Jan;122:346-56. DOI: 10.1016/j.envint.2018
dc.identifier.issn 0160-4120
dc.identifier.uri http://hdl.handle.net/10230/37053
dc.description.abstract There is increasing evidence of the health benefits of exposure to natural environments, including green and blue spaces. The association with physical functioning and its decline at older age remains to be explored. The aim of the present study was to investigate the longitudinal association between the natural environment and the decline in physical functioning in older adults. We based our analyses on three follow-ups (2002-2013) of the Whitehall II study, including 5759 participants (aged 50 to 74 years at baseline) in the UK. Exposure to natural environments was assessed at each follow-up as (1) residential surrounding greenness across buffers of 500 and 1000 m around the participants' address using satellite-based indices of greenness (Enhanced Vegetation Index (EVI) and Normalized Difference Vegetation Index (NDVI)) and (2) the distance from home to the nearest natural environment, separately for green and blue spaces, using a land cover map. Physical functioning was characterized by walking speed, measured three times, and grip strength, measured twice. Linear mixed effects models were used to quantify the impact of green and blue space on physical functioning trajectories, controlled for relevant covariates. We found higher residential surrounding greenness (EVI and NDVI) to be associated with slower 10-year decline in walking speed. Furthermore, proximity to natural environments (green and blue spaces combined) was associated with slower decline in walking speed and grip strength. We observed stronger associations between distance to natural environments and decline in physical functioning in areas with higher compared to lower area-level deprivation. However, no association was observed with distance to green or blue spaces separately. The associations with decline in physical functioning were partially mediated by social functioning and mental health. Our results suggest that higher residential surrounding greenness and living closer to natural environments contribute to better physical functioning at older ages.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.relation.ispartof Environment International. 2019 Jan;122:346-56
dc.rights © 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
dc.rights.uri http://creativecommons.org/licenses/BY-NC-ND/4.0/
dc.subject.other Medi ambient
dc.subject.other Persones grans -- Aspectes ambientals
dc.title Green and blue spaces and physical functioning in older adults: Longitudinal analyses of the Whitehall II study
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1016/j.envint.2018
dc.subject.keyword Ageing
dc.subject.keyword Built environment
dc.subject.keyword Functional status
dc.subject.keyword NDVI
dc.subject.keyword Physical capability
dc.subject.keyword Sea
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion

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