Just add water: aquatic environments and good public health
Benedict W. Wheeler, Mathew White & Michael H. Depledge
Affiliation: European Centre for Environment & Human Health, Peninsula College of Medicine & Dentistry, Universities of Exeter and Plymouth
Abstract: Research regarding the positive role of natural environments in supporting good health has primarily focussed on greenspace and woodlands, and there have been few attempts to differentiate health and wellbeing effects of different environments. As part of a programme of research around aquatic environments (“bluespace”) health and wellbeing, we investigated relationships between proximity to aquatic environments and self-reported health.
Using methods similar to those used in greenspace and health research, we calculated the proportion of the population rating their health as ‘Good’ in the 2001 UK census, for 32,482 small areas in England. These data have previously been used to produce rates of poor health; here we consider good health as the outcome, reflecting interest in salutogenic environments. We used GIS and multivariate regression models to investigate associations between good health and proximity to both inland waters and the coast. Analyses were adjusted for potential confounders including greenspace, age, sex and socio-economic deprivation, and were stratified by urban-rural status. Proximity to the coast was associated positively with good health, with effects strongest in urban areas. Inland water was positively associated with good health in town/periurban areas. There were indications of interactions with area deprivation, with consequent implications for health inequalities.
Keywords: Blue space; aquatic environments; GIS; UK |
Relationships Between Nearby Green Space and Physiological Stress for Residents of Deprived Urban Areas
Catharine Ward Thompson1, Jenny Roe2, Peter A. Aspinall1, Angela Clow3, Richard Mitchell4, David Miller5 1OPENspace Research Centre, Edinburgh College of Art, University of Edinburgh, UK; 2School of Built Environment, Heriot-Watt University, UK; 3Department of Psychology, University of Westminster, UK; 4Centre of Population Health Sciences, University of Glasgow, UK; 5James Hutton Institute, Craigiebuckler, Aberdeen, UK.
Abstract: Green space in the environment is associated with a wide range of health benefits, including stress reduction, but much of the research relies on either self-reported indicators or has been undertaken in artificially controlled conditions. Use of biomarkers as independent measures offers scope for better understanding of the mechanisms behind links between green space and health. This study sets out the results of both a pilot study (n=25) and subsequent larger study (n=78) in a deprived city area (in Scotland), using cortisol as a biomarker of stress.
The paper will present the rationale and methodology for measuring cortisol and analyzing it in relation to the amount of green space in the residential environment. In addition to cortisol measures, self-reported stress and general wellbeing indicators were used as secondary outcome measures. Since some studies have shown stronger relationships between green space and health for those at home the most (older people, children, unemployed people) (de Vries et al 2003), this study focused on people not in work in order to maximise exposure to the residential environment. Results from the pilot study indicate statistically significant relationships between self-reported wellbeing and cortisol measures and percentage green space in the living environment. These findings are confirmed by a larger study which has found effects of gender on self-reported stress, with stress being higher in women. Significant interaction effects between gender and percentage green space were found on mean cortisol concentrations, showing a positive effect of increasing green space on cortisol levels in women, but not for men. Our studies indicate that higher levels of green space close to home are associated with better health and that this effect may be particularly pertinent to women and/or those experiencing poorer mental health. The concluding discussion will identify the benefits and challenges of the methodology in exploring relationships between mental wellbeing and green space in deprived urban areas.
Keywords: woodlands, urban green, deprivation, activity levels, frequency of use, quality of life.
References: de Vries, S., Verheij, R. A., Groenewegen, P. P., Spreeuwenberg, P.(2003), Natural environments - healthy environments? An exploratory analysis of the relationship between green space and health. Environment and Planning A, 35: 1717-1731. |