geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Urban trails and physical activity: a natural experiment


, : Urban trails and physical activity: a natural experiment. American Journal of Preventive Medicine 39(3): 259-262

The built environment in which a person lives and works is thought to have a strong influence on his or her level of physical activity. However, this belief is largely based on cross-sectional studies underlining the need for prospective studies using natural experiments. This study adopted a quasi-experimental research design with multiple control neighborhoods and was conducted between 2005 and 2007. Data were analyzed in 2008. The subjects were children, adolescents, and adults in free-living conditions within one experimental and two control neighborhoods. An urban greenway/trail was retrofitted in a neighborhood that lacked connectivity of the residential pedestrian infrastructure to nonresidential destinations. The main outcomes were 2-hour counts of directly observed physical activity in the general neighborhood and, at the school level, active transport to school. At the neighborhood level, the 2-hour counts of physical activity significantly increased between 2005 and 2007 (p=0.000) in the intervention neighborhood, with a median increase of 8.0 counts. The control neighborhoods had a significant decrease in counts (p=0.000). The pre- and post-intervention changes between experimental and control neighborhoods were significantly different for total physical activity (p=0.001); walking (p=0.001); and cycling (p=0.038). There was no noted change over time for active transport to school in either the intervention or control neighborhoods. Changes to the pedestrian connectivity of the built environment infrastructure may lead to greater levels of physical activity. However, this positive effect was limited to physical activity at the neighborhood level and not to active transport to school.

US$19.90

PMID: 20709258

DOI: 10.1016/j.amepre.2010.05.010


Other references

Galasko, D.; Golde, T.E.; Scheltens, P., 2013: Progress in Alzheimer's disease research circa 2013: Is the glass half empty or half full?. These are exciting but challenging times in Alzheimer's disease (AD) research. At many levels a more detailed picture of the disease is being refined and advanced, but other aspects of the disease remain highly enigmatic. Furthermore, long-ho...

Ehrenberg L.; Hussain S., 1977: Genetic aspects of dose effect relationships and their significance for extrapolation to man gene mutations. Mutation Research 46(3): 196-197

Kennedy, P.; Parry, A.J.; Parums, D.; Pillai, R., 1995: Myxoma of the aortic valve. Myxomas are one of the most common cardiac tumors but usually are confined to the atria. Although described in all cardiac chambers and on all cardiac valves, only one postmortem case of an aortic valve myxoma has been published. We present the ca...

Wu, H.S.; Kim, M.S.; Auslander, D.E.; Gordziel, S.A.; Sofia, R.D., 1993: Optimization of a chewable tablet formulation using a factorial central composite design. Pharmaceutical Research (New York) 10(10 SUPPL ): S149

Sadoun, R., 1957: Paranoid syndrome. L'encephale 46(2): 181-187

Singh, N.; Gayowski, T.; Wagener, M.M.; Marino, I.R., 1997: Bloodstream infections in liver transplant recipients receiving tacrolimus. The microbial origin, timing, risk factors, and outcome of bloodstream infections (bacteremia and fungemia) were prospectively analyzed in 130 consecutive liver transplant recipients receiving tacrolimus-based immunosuppression; median followup wa...

Csiky G., 1984: The history and development of mineralogy in Hungary till 1825. International Geological Congress, Abstracts = Congres Geologique International, Resumes 27(Vol

Broedersz, C.P.; Storm, C.; MacKintosh, F.C., 2008: Nonlinear elasticity of composite networks of stiff biopolymers with flexible linkers. Motivated by recent experiments showing nonlinear elasticity of in vitro networks of the biopolymer actin cross-linked with filamin, we present an effective medium theory of flexibly cross-linked stiff polymer networks. We model such networks by r...

Basavaraja N.; Nandeesha M.C.; Varghese T.J.; Keshavanath P., 1991: Effect of feeding high levels of 17 alpha methyltestosterone on the sex ratio and growth of two sizes of oreochromis mossambicus peters. The effect of feeding high doses of 17.alpha.-methylestosterone (17.alpha.-MT) for 30 days was assessed on sex ratio and growth in Oreochromis mossambicus, employing 2 size groups of fry, viz. 8-10 mm and 12-14 mm. In group 1,100 ppm dosage produc...

Vrubel, J.; Hahn, M.; Nozicková, M.; Ondrácek, Z., 1983: Diagnosis of the vitality of maintained kidneys. Czechoslovak Medicine 6(3): 183-184