Minority Health Archive

Accessibility and connectivity in physical activity studies: The impact of missing pedestrian data

Chin, Gary K.W. and Van Niel, Kimberly P. and Giles-Corti, Billie and Knuiman, Mathew (2008) Accessibility and connectivity in physical activity studies: The impact of missing pedestrian data. Preventive Medicine, 46 (1). pp. 41-45.

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Abstract

Objective. One important characteristic in physical activity research into the built environment is network connectivity, usually calculated using street networks. However, a true pedestrian network may have very different connectivity than a street network. This study, conducted in 2004, examines the difference in walkability analyses when street networks versus pedestrian networks are used for four metropolitan suburbs in Perth, Western Australia. Methods. A street network of Perth was used to represent the current standard of data for walkability analyses. Aerial photography from 2003 was used to create a pedestrian network, which incorporated pedestrian footpaths into the street network. The street and pedestrian networks were compared using three measures of connectivity: Pedsheds, link node ratio and pedestrian route directness. Results. A comparison of the results using street versus pedestrian networks showed very different outcomes for conventional neighbourhood designs. Connectivity measures for conventional neighbourhoods improved up to 120% with the addition of pedestrian networks, although traditional neighbourhoods still had slightly better connectivity values overall. Conclusion. The true pedestrian network increases the connectivity of a neighbourhood and may have significant impact on these measures, especially in neighbourhoods with conventional street designs. It is critical that future studies incorporate pedestrian networks into their analyses.


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Item Type: Article
Additional Information: Access to full text is subject to the publisher's access restrictions.
Uncontrolled Keywords: Accessibility; Connectivity; GIS; Neighbourhoods; Street network; Pedestrian networks
Subjects: Research
Health
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    Depositing User: Users 141 not found.
    Date Deposited: 13 Mar 2008
    Last Modified: 03 May 2011 09:35
    Link to this item (URI): http://health-equity.pitt.edu/id/eprint/914

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