Neighborhood built environments and cognition in later life.

Objectives: Maintaining good cognition is crucial in later life. However, most existing research has focused on individual factors impacting cognition, and few studies have investigated the association between neighborhood built environment and older adults' cognition. This study examined the association between neighborhood built environment and cognition among community-dwelling older adults and identified variations in this association between different age groups in the older population.Methods: Data were derived from a cross-sectional survey of 1873 people aged 65 years and above in Hong Kong. We merged individual data from the survey with neighborhood built environment data based on community auditing and geographical information system. After controlling for individual covariates, we used multivariable linear regression to examine the association between neighborhood built environment and cognition.Results: Residents aged 80 and younger in neighborhoods with a higher land-use mix and more public transport terminals exhibited better cognition. Only the number of community centers in a neighborhood was positively associated with cognition for people older than 80.Conclusion: The built environment creates diverse impacts on different age groups among older adults. Our findings provide useful information for urban planners and policymakers for planning community facilities and built environments that consider the needs of different age groups within the older population.

Neighbourhood physical environment, intrinsic capacity, and 4-year late-life functional ability trajectories of low-income Chinese older population: A longitudinal study with the parallel process of latent growth curve modelling.

BACKGROUND: Knowledge of how intrinsic capacity (IC) and neighbourhood physical environment shape functional ability (FA) trajectories in later life remains understudied. We investigated four-year trajectories of IC and their impact on FA trajectories and the association between neighbourhood physical environment and FA trajectories among community-dwelling older adults in Hong Kong, China. METHODS: We conducted a four-wave longitudinal study from 2014 to 2017 in Hong Kong with 2,081 adults aged 65 and above. FA was assessed by The Chinese Lawton Instrumental Activities of Daily Living Scale. We used cognition, affect, locomotion, sensory capacity, and vitality to capture the multiple domains of IC. Neighbourhood physical environment attributes included green space, land use diversity, and availability of facilities, assessed within 200- and 500-meter buffers of respondents' homes. We used the parallel process of latent growth curve model. FINDINGS: IC (Unstandardized coefficient, ß = -0.02, p<0.001) and FA (ß = -0.20, p<0.001) each decreased significantly over time. Individuals with declines in IC experienced a faster decline in FA over time. Green space within a 200-meter buffer (ß = 1.15, p = 0.023), the number of leisure (ß = 0.03, p = .0.043) and public transport (ß = 0.08, p = .0.003) facilities within a 500-meter buffer slowed the rate of FA decline. INTERPRETATION: The level of FA decreased over time in later life. Changes in IC shaped FA trajectories. Increased residential green space and the number of leisure and public transport facilities in the neighbourhood may help slow FA decline over time. FUNDING: The Hong Kong Housing Society.

Longitudinal associations between neighbourhood physical environments and depressive symptoms of older adults in Hong Kong: The moderating effects of terrain slope and declining functional abilities.

Little is known about the accumulative impacts of neighbourhood physical environments on older adults' depressive symptoms over time. Based on a cohort study of 2081 older adults in Hong Kong, this study examined longitudinal relationships between neighbourhood physical environments and depressive symptoms among older adults, with a particular focus on the moderating effects of terrain slope and individual functional ability using latent growth curve modelling. Results indicated that the availability of community centres and passive leisure facilities reduced depressive symptoms over time. The protective effects of residential surrounding greenness on depressive symptoms among older adults differed by the terrain slope types. Longitudinal associations between neighbourhood physical environments and depressive symptoms varied between older adults with and without functional limitations. This study has implications for the Ecological Theory of Ageing by identifying the dynamic interplay of environment demands and individual functional ability. Planning policies for building age-friendly neighbourhoods are discussed.

Older Adults' Perceptions of Age-friendliness in Hong Kong.

BACKGROUND AND OBJECTIVES: There is little understanding about how rapid urban development has affected the extent to which communities are able to optimize health and participation opportunities for older adults in Hong Kong. Our objective was to examine what older residents perceive to be the shortcomings of their communities in meeting their psychosocial and physical needs as they age. RESEARCH DESIGN AND METHODS: In reference to the WHO Age-Friendly Cities Project Methodology: Vancouver Protocol, we conducted nine focus groups comprising 65 participants for an Age-Friendly City baseline assessment in two districts in Hong Kong, China. Participants were asked to share their views on their respective district of residence, and identify aspects of the city they found unfriendly. Data generated from interviews were analyzed using thematic analysis. RESULTS: Five of the following key themes were identified: the failure of public transportation to cater to the needs of older adults; a lack of public space for recreation and socializing; diminishing human interactions in welfare services; physical and financial challenges relating to housing; and workplace discrimination against older adults. DISCUSSION AND IMPLICATIONS: These findings underscore the importance of prioritizing the social welfare of older adults in building a more inclusive and age-friendly city. They also highlight the difficulties in fostering an inclusive environment while ensuring efficiency and profit maximization.