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Neighborhood built environment and socioeconomic status in relation to physical activity, sedentary behavior, and weight status of adolescents.

Abstract：

INTRODUCTION:The study examined the association of neighborhood walkability to multiple activity-related outcomes and BMI among adolescents and evaluated socioeconomic status as an effect modifier. METHOD:Cross-sectional study, with adolescents recruited from neighborhoods that met criteria for a 2 × 2 matrix defined by high/low GIS-defined walkability and high/low median income. Adolescents aged 12-16 years (n = 928) were recruited from selected neighborhoods in Maryland and King County, Washington regions in 2009-2011. There were 50.4% girls, and 66.3% were non-Hispanic white, with no medical restrictions on physical activity (PA) or diets. Total PA and sedentary time was assessed by 7 days of accelerometer monitoring. Adolescents self-reported active transport, time spent on 6 sedentary behaviors, and height and weight, used to compute BMI percentiles. Mixed model linear and logistic regressions examined outcomes for association with walkability and income, adjusting for demographic covariates and clustering within block groups. RESULTS:Walkability was positively and significantly related to objectively-measured PA (p < .001) and more frequent walking for transportation (p < .001). Total self-reported sedentary time (p = .048) and TV time (p < .007) were negatively related to walkability. Time in vehicles was negatively related to walkability only among higher-income adolescents. CONCLUSIONS:Neighborhood walkability was strongly and consistently associated with adolescents' objectively-assessed total physical activity and reported active transportation. A novel finding was that adolescents living in walkable neighborhoods reported less television time and less time in vehicles. Most results were similar across income categories. Results strengthen the rationale for recommendations to improve walkability.

journal_name

Prev Med

journal_title

Preventive medicine

authors

Sallis JF,Conway TL,Cain KL,Carlson JA,Frank LD,Kerr J,Glanz K,Chapman JE,Saelens BE

doi

10.1016/j.ypmed.2018.02.009

subject

Has Abstract

pub_date

2018-05-01 00:00:00

pages

47-54

eissn

0091-7435

issn

1096-0260

pii

S0091-7435(18)30036-7

journal_volume

110

pub_type

杂志文章

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Neighborhood built environment and socioeconomic status in relation to physical activity, sedentary behavior, and weight status of adolescents.