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zoom RSS 近くの緑が子どもの肥満を減らす

<<   作成日時 : 2008/11/19 00:30   >>

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3,800人以上の市街地に住む子どもの研究で、緑地が多い地域に住んでいると子どもの体重増加が抑えられ肥満リスクが減少し、健康にも良いとわかった。同じ場所に24ヶ月以上住んでいる3-18才の子どもについての研究で、年齢や人種や性別を問わず、緑地が多い地域ではBMIの増加が遅かった。外で活動的に遊ぶことが寄与していると考えられる。
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ほんの少しの緑が経済格差による健康格差を埋める
http://kurie.at.webry.info/200811/article_16.html
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Greener Neighborhoods Mean Slimmer Children
Trees, parks get inner city kids moving, study finds
-- Robert Preidt
http://health.msn.com/health-topics/asthma/articlepage.aspx?cp-documentid=100220675

Trees, parks get inner city kids moving, study finds.

FRIDAY, Nov. 14 (HealthDay News) - Greener neighborhoods, with lots of trees, help inner city kids keep excess pounds at bay, according to a U.S. study.

"Previous work, including our own, has provided snapshots in time, and shown that for children in densely population cities, the greener the neighborhood, the lower the risk of obesity. Our new study of over 3,800 inner-city children revealed that living in areas with green space has a long-term positive impact on children's weight and thus health," study senior author Gilbert C. Liu, an assistant professor of pediatrics at the Indiana University School of Medicine, said in a school news release.

The children in the study, ages 3 to 18 years, were in the same residence for more than 24 consecutive months. Higher neighborhood "greenness" was associated with slower increases in body mass index (BMI) over time, regardless of age, race or sex, said the researchers. They added this slowing of BMI could reduce the risk of child obesity in the long term.

The findings were published in the December issue of the American Journal of Preventive Medicine.

Trees and other urban vegetation improve a neighborhood's appearance, reduce pollution, and keep the area cooler in the summer -- all of which encourage children to be outside playing, walking and running, the team said.

Being active reduces the risk of obesity, which is associated with a number of health problems including type 2 diabetes, asthma, hypertension, sleep apnea and emotional distress. Obese children are likely to become obese adults.

"Obesity is a national epidemic necessitating the involvement of health-care providers, parents, and the community," Liu said. "Our lifestyle makes us sedentary and less healthy. For children, physical activity is active play, and that usually takes place outdoors. We need to encourage them to go outside and play. I love the idea that we can landscape for health."

More information

The Nemours Foundation has more about overweight and obesity in children.
SOURCE: Indiana University, news release, Oct. 28, 2008

Copyright © 2008 ScoutNews, LLC. All rights reserved.

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American Journal of Preventive Medicine
Volume 35, Issue 6, December 2008, Pages 547-553

Neighborhood Greenness and 2-Year Changes in Body Mass Index of Children and Youth

References and further reading may be available for this article. To view references and further reading you must purchase this article.

Janice F. Bell PhD, MPHa, Corresponding Author Contact Information, E-mail The Corresponding Author, Jeffrey S. Wilson PhDb and Gilbert C. Liu MD, MSc

aDepartment of Health Services, School of Public Health and Community Medicine, University of Washington, Seattle, Washington

bDepartment of Geography, Indiana University–Purdue University, Indianapolis

cChildren's Health Services Research Program, Indiana University School of Medicine, Riley Research Building, Indianapolis, Indiana

Available online 8 November 2008.

Background

Available studies of the built environment and the BMI of children and youth suggest a contemporaneous association with neighborhood greenness in neighborhoods with high population density. The current study tests whether greenness and residential density are independently associated with 2-year changes in the BMI of children and youth.
Methods

The sample included children and youth aged 3–16 years who lived at the same address for 24 consecutive months and received well-child care from a Marion County IN clinic network within the years 1996–2002 (n=3831). Multiple linear regression was used to examine associations among age- and gender-specific BMI z-scores in Year 2, residential density, and a satellite-derived measure of greenness, controlling for baseline BMI z-scores and other covariates. Logistic regression was used to model associations between an indicator of BMI z-score increase from baseline to Time 2 and the above-mentioned predictors.
Results

Higher greenness was significantly associated with lower BMI z-scores at Time 2 regardless of residential density characteristics. Higher residential density was not associated with Time 2 BMI z-scores in models regardless of greenness. Higher greenness was also associated with lower odds of children's and youth's increasing their BMI z-scores over 2 years (OR=0.87; 95% CI=0.79, 0.97).
Conclusions

Greenness may present a target for environmental approaches to preventing child obesity. Children and youth living in greener neighborhoods had lower BMI z-scores at Time 2, presumably due to increased physical activity or time spent outdoors. Conceptualizations of walkability from adult studies, based solely on residential density, may not be relevant to children and youth in urban environments.

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