Format

Send to

Choose Destination
Health Place. 2012 Jan;18(1):46-54. doi: 10.1016/j.healthplace.2011.09.003. Epub 2011 Sep 16.

A study of community design, greenness, and physical activity in children using satellite, GPS and accelerometer data.

Author information

1
Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, CA 94720-7360, USA. ealmanza@berkeley.edu

Abstract

This study examined relationships between greenness exposure and free-living physical activity behavior of children in smart growth and conventionally designed communities. Normalized Difference Vegetation Index (NDVI) was used to quantify children's (n=208) greenness exposure at 30-s epoch accelerometer and GPS data points. A generalized linear mixed model with a kernel density smoothing term for addressing spatial autocorrelation was fit to analyze residential neighborhood activity data. Excluding activity at home and during school-hours, an epoch-level analysis found momentary greenness exposure was positively associated with the likelihood of contemporaneous moderate-to-vigorous physical activity (MVPA). This association was stronger for smart growth residents who experienced a 39% increase in odds of MVPA for a 10th to 90th percentile increase in exposure to greenness (OR=1.39, 95% CI 1.36-1.44). An individual-level analysis found children who experienced >20 min of daily exposure to greener spaces (>90th percentile) engaged in nearly 5 times the daily rate of MVPA of children with nearly zero daily exposure to greener spaces (95% CI 3.09-7.20).

PMID:
22243906
PMCID:
PMC3399710
DOI:
10.1016/j.healthplace.2011.09.003
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center