Int J Health Geogr - Utility of passive photography to objectively audit built environment features of active transport journeys: an observational study.


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CKGROUND: Active transport can contribute to physical activity accumulation and improved health in adults. The built environment is an established associate of active transport behaviours; however, assessment of environmental features encountered during journeys remains challenging. The purpose of this study was to examine the utility of wearable cameras to objectively audit and quantify environmental features along work-related walking and cycling routes.METHODS: A convenience sample of employed adults was recruited in New Zealand, in June 2011. Participants wore a SenseCam for all journeys over three weekdays and completed travel diaries and demographic questionnaires. SenseCam images for work-related active transport journeys were coded for presence of environmental features hypothesised to be related to active transport. Differences in presence of features by transport mode and in participant-reported and SenseCam-derived journey duration were determined using two-sample tests of proportion and an independent samples t-test, respectively.RESULTS: Fifteen adults participated in the study, yielding 1749 SenseCam images from 30 work-related active transport journeys for coding. Significant differences in presence of features were found between walking and cycling journeys. Almost a quarter of images were uncodeable due to being too dark to determine features. There was a non-significant tendency for respondents to under-report their journey duration.CONCLUSION: This study provides proof of concept for the use of the SenseCam to capture built environment data in real time that may be related to active transportation. Further work is required to test and refine coding methodologies across a range of settings, travel behaviours, and demographic groups.

Resumo Limpo

ckground activ transport can contribut physic activ accumul improv health adult built environ establish associ activ transport behaviour howev assess environment featur encount journey remain challeng purpos studi examin util wearabl camera object audit quantifi environment featur along workrel walk cycl routesmethod conveni sampl employ adult recruit new zealand june particip wore sensecam journey three weekday complet travel diari demograph questionnair sensecam imag workrel activ transport journey code presenc environment featur hypothesis relat activ transport differ presenc featur transport mode participantreport sensecamderiv journey durat determin use twosampl test proport independ sampl ttest respectivelyresult fifteen adult particip studi yield sensecam imag workrel activ transport journey code signific differ presenc featur found walk cycl journey almost quarter imag uncod due dark determin featur nonsignific tendenc respond underreport journey durationconclus studi provid proof concept use sensecam captur built environ data real time may relat activ transport work requir test refin code methodolog across rang set travel behaviour demograph group

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