The potential for walkability to narrow neighbourhood socioeconomic inequalities in physical function: A case study of middle-aged to older adults in Brisbane, Australia

Exploring sex differences in the longitudinal association between streetlighting and transport walking

Regular physical activity, such as transport walking, is essential for health, yet many adults do not meet recommended physical activity levels. The built environment, particularly streetlighting, plays a critical role in promoting transport walking. However, existing evidence on the relationship between streetlighting and transport walking is largely cross-sectional, with limited longitudinal research exploring potential sex differences. This study aimed to assess the longitudinal association between objectively measured streetlight count and transport walking among mid-to-older-aged adults in Brisbane, Australia, and to explore whether this association varies by sex. Data were from the How Areas in Brisbane Influence HealTh and AcTivity (HABITAT) study, a multilevel cohort study with five waves over nine years (2007-2016). The analytical sample included participants who did not move during the study. Transport walking was self-reported and dichotomized into walkers and non-walkers. Streetlight counts within a 1 km road network buffer around participants' homes were measured alongside transport walking. Generalized linear mixed-effects models were used, adjusting for sociodemographic factors, length of stay, neighbourhood preference, and built environment attributes. Higher streetlight counts were positively associated with transport walking (OR 1.002; 95% CI 1.001, 1.002), and the association remained significant after adjusting for residential density, street connectivity, and land-use mix. No significant sex differences were found. This study provides longitudinal evidence that well-lit environments promote transport walking among mid-to-older-aged adults. This finding can inform urban planning and public health policies aimed at encouraging transport walking to help reduce the risk of chronic disease.

Associations between the urban neighbourhood built and social environment characteristics with physical functioning among mid- and older-aged adults: A systematic review

There is growing recognition of the association between neighbourhood factors and individuals' health. This systematic review examines the associations between urban neighbourhood built and social environment characteristics with different measures of physical functioning among mid- and older-aged adults over 45 years, focusing on cross-sectional and longitudinal study designs. It responds to the increase in publications on this topic following the COVID-19 pandemic. The systematic review included 25 studies written in English from 2018 onwards sourced from 8 databases. Studies were imported into Covidence and reviewed following the 'Preferred Reporting Items for Systematic Reviews and Meta-Analysis' (PRISMA) protocols. Findings were assessed according to 13 neighbourhood environment variables: aesthetics, crime safety, greenness and parks, land use mix and destinations, neighbourhood disadvantage, pedestrian/street infrastructure, public transport, residential density, social environment, street connectivity, traffic safety, walkability, and composite variables. Significant associations in the expected direction were found for land use mix and destinations, walkability, crime safety, greenness and parks, social environment, and neighbourhood disadvantage with physical functioning in mid- and older-aged adults. Weaker evidence of expected associations was found for residential density and aesthetics. Future research avenues on this topic include investigating built and social neighbourhood environments in diverse geographies and populations, considering housing status and length of exposure to the neighbourhood environment, using longitudinal surveys over longer time periods and objective measurements.

Comprehensive walkability assessment of urban pedestrian environments using big data and deep learning techniques

Assessing street walkability is a critical agenda in urban planning and multidisciplinary research, as it facilitates public health, community cohesion, and urban sustainability. Existing evaluation systems primarily focus on objective measurements, often neglecting subjective assessments and the diverse walking needs influenced by different urban spatial elements. This study addresses these gaps by constructing a comprehensive evaluation framework that integrates both subjective and objective dimensions, combining three neighbourhood indicators: Macro-Scale Index, Micro-Scale Index, and Street Walking Preferences Index. A normalization weighting method synthesizes these indicators into a comprehensive index. We applied this framework to assess the street environment within Beijing's Fifth Ring Road. The empirical results demonstrate that: (1) The framework reliably reflects the distribution of walkability. (2) The three indicators show both similarities and differences, underscoring the need to consider the distinct roles of community and street-level elements and the interaction between subjective and objective dimensions. (3) In high-density cities with ring-road development patterns, the Macro-Scale Index closely aligns with the Comprehensive Index, demonstrating its accuracy in reflecting walkability. The proposed framework and findings offer new insights for street walkability research and theoretical support for developing more inclusive, sustainable and walkable cities.

Self-perception of the neighborhood environment, cognitive impairment and functional limitations in community-dwelling older adults: A cross-sectional study

AIMS

It is important to identify the association between characteristics of the neighborhood environment, cognitive impairment and functional limitations to organize early and effective intervention strategies.

METHODS

A cross-sectional survey of 308 community-dwelling older adults was conducted. Logistic Regression analyses were performed to verify the associations between self-perceived characteristics of the neighborhood environment (Neighborhood Environment Walkability Scale), cognitive impairment (Mini-Mental State Examination) and functional limitations (mobility, lower limb muscle strength and balance).

RESULTS

Significant negative associations were observed: (1) better infrastructure, traffic and safety and mobility limitation; (2) better infrastructure and muscle weakness; (3) better safety and balance limitation; and (4) better streets/sidewalks and cognitive impairment. On the other hand, positive associations were observed between poor safety with mobility limitation and muscle weakness.

CONCLUSIONS

Our findings contribute to greater knowledge about neighborhood characteristics regarding mental and physical health in community-dwelling older adults.

Neighbourhood greenness moderates the association between physical activity and geriatric-relevant health outcomes: an analysis of the CLSA

BACKGROUND

The purpose of this analysis was to evaluate the relationship between baseline physical activity levels of older adults and geriatric-relevant health outcomes at 3-year follow-up, and to determine whether baseline neighbourhood characteristics alter this association.

METHODS

Data from the Canadian Longitudinal Study on Aging (CLSA) were used to assess geriatric-relevant outcomes of physical impairment, medication use, severity of daily pain, and depressive symptoms. Data from the Canadian Active Living Environments (Can-ALE) and the Normalized Difference Vegetative Index (NDVI) were used to determine neighbourhood walkability and greenness, respectively. The analytic sample included adults who were 65 years or older at baseline [Formula: see text]. Adjusted odds ratios and 95% confidence intervals for the base relationships were calculated using proportional odds logistic regression (physical impairment, pain, medication use), and linear regression (depressive symptoms). Moderation effects of environmental factors were assessed using greenness and walkability.

RESULTS

The base relationships showed protective associations between each additional hour per week of total physical activity and physical impairment [Formula: see text] daily pain severity [Formula: see text] medication use [Formula: see text], and depressive symptoms [Formula: see text]. Additive moderation effects were seen when greenness was added to physical impairment [Formula: see text], daily pain severity [Formula: see text], and depressive symptoms [Formula: see text] but no moderation was seen with walkability. Sex differences were observed. For example, greenness moderation was found in severity of daily pain in males but not in females.

CONCLUSION

Future research investigating geriatric-relevant health outcomes and physical activity should consider neighbourhood greenness as a potential moderator.

The ideal neighbourhoods of successful ageing: A machine learning approach

Ageing outcomes are shaped by not only health conditions, but also their interactions with the external environment. While the effects of some specific neighbourhood characteristics such as rurality on ageing have been evaluated in various studies, we still know little about the relative importance of particular natural and urban environments and how the impact varies at different stages of the ageing process. This article addresses these knowledge gaps by analysing survey data from 33 European countries using a machine learning method called multivariate regression trees (MRT). Multiple wellbeing indicators are combined to form an ageing profile for each individual in the survey. After studying these profiles using MRT, we find that generally the affordability of health facilities is a major determinant of life satisfaction, self-rated health condition and mental wellbeing for individuals in most age groups. Other important but age-specific determinants are neighbourhood safety and accessibility to cultural facilities and to green areas. In contrast, characteristics such as urbanity, transportation and air quality do not significantly influence ageing outcomes. Our findings lend support to the resources theory in explaining ageing outcomes and suggest that more resources may have to be directed to improve the affordability and quality of health care services, the policing services and the accessibility to cultural and green areas in order to achieve more favourable ageing outcomes.

Area-Level Associations between Built Environment Characteristics and Disability Prevalence in Australia: An Ecological Analysis

The importance of health-promoting neighborhoods has long been recognized, and characteristics of local built environments are among the social determinants of health. People with disability are more likely than other population groups to experience geographic mobility and cost restrictions, and to be reliant on 'opportunity structures' available locally. We conducted an ecological analysis to explore associations between area-level disability prevalence for people aged 15-64 years and area-level built environment characteristics in Australia's 21 largest cities. Overall, disability was more prevalent in areas with lower walkability and lower local availability of various neighborhood amenities such as public transport, healthier food options, public open space, physical activity and recreation destinations and health and mental health services. These patterns of lower liveability in areas of higher disability prevalence were observed in major cities but not in regional cities. Our findings suggest that geographically targeted interventions to improve access to health-enhancing neighborhood infrastructure could reduce disability-related inequalities in the social determinants of health.