Impact of community gardens in promoting sustainable lifestyles in urban settings: design and baseline data of the JArDinS study

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15 octobre 2019

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Marion Tharrey et al., « Impact of community gardens in promoting sustainable lifestyles in urban settings: design and baseline data of the JArDinS study », HAL-SHS : économie et finance, ID : 10670/1.pxcm8x


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IntroductionDespite growing evidence for the multiple health benefits of community gardening, longitudinal studies based on quantitative data are needed. JArDinS is a quasi-experimental study aimed at assessing the impact of community garden participation (a natural experiment) in the adoption of more sustainable lifestyles.Materials and MethodsGardeners starting gardening in a community garden in Montpellier (France) were recruited in 2018 (natural experiment group). Volunteers with no experience in community gardening and matched for age range, gender, household income and household composition were recruited in a control group. A recruitment goal of 80 participants per group was determined to detect a 30% increase in F&V supply in the gardeners group.Participant were issued with three tools: a Food Supply Dairy to collect data on monthly household’s food supply, a triaxial accelerometer (Actigraph) to measure physical activity and an online questionnaire on mental and social health, sensitivity to food waste, and connection with nature. The sustainability of lifestyles is examined by considering conjointly the three dimensions of sustainability:1) Social/health – measured by nutritional quality of household’s food supply, physical activity, mental well-being and social connection.2) Environment – measured by environmental impact of household’s food supply and related food trips, concern for food waste and connection with nature. 3) Economy - measured by household food expenditure and the budget share of each food group and subgroup.Measures have been collected at baseline and will be repeated 12 months later. Change of outcomes after 1 year will be compared between the natural experiment and the control groups, to evaluate the effect of access to a community garden on the sustainability of lifestyles.ResultsA final number of 77 participants per group were enrolled at baseline, which is 4% less the original recruitment goal. Baseline data for the natural experiment group and the control group are currently being analysed and will be presented. DiscussionThis study will provide valuable information about the potential of community gardens to favor sustainable lifestyles, based on a robust quasi-experimental design allowing causality evaluation. Conflict of InterestThere is no conflict of interest

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