Journal article
The Effect of Light Rail Transit on Body Mass Index and Physical Activity
American journal of preventive medicine, v 39(2), pp 105-112
01 Aug 2010
PMID: 20621257
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Background
The built environment can constrain or facilitate physical activity. Most studies of the health consequences of the built environment face problems of selection bias associated with confounding effects of residential choice and transportation decisions.
Purpose
To examine the cross-sectional associations between objective and perceived measures of the built environment; BMI; obesity (BMI>30 kg/m2); and meeting weekly recommended physical activity (RPA) levels through walking and vigorous exercise. To assess the effect of using light rail transit (LRT) system on BMI, obesity, and weekly RPA levels.
Methods
Data were collected on individuals before (July 2006–February 2007) and after (March 2008–July 2008) completion of an LRT system in Charlotte NC. BMI, obesity, and physical activity levels were calculated for a comparison of these factors pre- and post-LRT construction. A propensity score weighting approach adjusted for differences in baseline characteristics among LRT and non-LRT users. Data were analyzed in 2009.
Results
More-positive perceptions of one's neighborhood at baseline were associated with a −0.36 (p<0.05) lower BMI; 15% lower odds (95% CI=0.77, 0.94) of obesity; 9% higher odds (95% CI=0.99, 1.20) of meeting weekly RPA through walking; and 11% higher odds (95% CI=1.01, 1.22) of meeting RPA levels of vigorous exercise. The use of LRT to commute to work was associated with an average −1.18 reduction in BMI (p<0.05) and an 81% reduced odds (95% CI=0.04, 0.92) of becoming obese over time.
Conclusions
The results of this study suggest that improving neighborhood environments and increasing the public's use of LRT systems could provide improvements in health outcomes for millions of individuals.
Metrics
Details
- Title
- The Effect of Light Rail Transit on Body Mass Index and Physical Activity
- Creators
- John M. MacDonald - University of PennsylvaniaRobert J. Stokes - Department of Culture and Communication, Drexel University, Philadelphia, PennsylvaniaDeborah A. Cohen - RAND CorporationAaron Kofner - RAND CorporationGreg K. Ridgeway - RAND Corporation, Los Angeles, California
- Publication Details
- American journal of preventive medicine, v 39(2), pp 105-112
- Publisher
- Elsevier
- Number of pages
- 8
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Culture and Communication [Historical]
- Web of Science ID
- WOS:000280429100001
- Scopus ID
- 2-s2.0-77955301482
- Other Identifier
- 991021881399004721
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InCites Highlights
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Public, Environmental & Occupational Health