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Interactive effects of built environment and psychosocial attributes on physical activity: a test of ecological
Ding Ding1, James F Sallis, Terry L Conway
1Department of Family and Preventive Medicine, University of California San Diego, San Diego, CA 92103, USA. diding@ucsd.edu
Background:
The principle of cross-level interactions of influence on behavior in ecological models is seldom studied.
Purpose:
To examine built environment × psychosocial interactive effects on physical activity.
Methods:
Multi-level mixed regression analyses used data from the Neighborhood Quality of Life Study conducted in neighborhoods in two US regions (n = 2,199 adults). Outcomes were (1) objectively measured moderate-to-vigorous physical activity, (2) reported transport walking, and (3) leisure-walking. Conceptually matched built environment variables were analyzed for domain-specific outcomes.
Results:
With leisure walking as the outcome, built environment × psychosocial interactions were significant in 7 of 20 models tested. Directions of interactions were consistent, indicating a stronger built environment-leisure walking association in adults with less favorable psychosocial status. Little evidence supported such interactions with objectively measured moderate-to-vigorous physical activity or transport walking as outcomes.
Conclusion:
The results imply that the built environment may exert stronger influence on adults who are not psychologically predisposed to be active.
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