Trends in Physical Activity, Sedentary Behavior, Diet, and BMI Among US Adolescents, 2001-2009
Trends in Physical Activity, Sedentary Behavior, Diet, and BMI Among US Adolescents, 2001-2009
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DOI：
10.1542/peds.2013-1488
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发表时间：
2013-10-01
期刊：
影响因子：
8
通讯作者：
Wang, Jing
中科院分区：
文献类型：
--
作者：
Iannotti, Ronald J.;Wang, Jing
目的：美国青少年肥胖的高患病率归因于身体活动（PA），久坐行为和饮食行为的人口变化。这项研究调查了美国11至16岁青少年这些行为的8年趋势。在2001-2002年期间招募了具有全国代表性的美国6至10年级学生样本（N = 14 607）、2005-2006（N = 9 150）和2009-2010（N = 10 848）学年，采用多阶段分层设计，以普查地区和年级为分层，以学区为主要抽样单位。非裔美国人和西班牙裔学生被过度抽样，以获得更好的估计这些群体。使用学龄儿童健康行为四年一次的调查，相同的问题评估了每个学年的BMI，PA，久坐和饮食行为。考虑到抽样设计和控制年龄，性别，种族/民族，和家庭affluence.RESULTS：在四年一度的调查，显着增加，确定了至少60分钟的PA，每天食用水果和蔬菜，吃早餐的天数在工作日和周末，和BMI。在同一时期，电视观看和糖果和含糖饮料的消费量下降。这些相同的模式被认为是在所有种族/ethnic groups.CONCLUSIONS：这些模式表明，公共卫生的努力，以改善肥胖相关的行为，美国青少年可能会有一些成功。然而，需要考虑同一时期BMI增加的其他解释。
OBJECTIVE: The high prevalence of adolescent obesity in the United States has been attributed to population changes in physical activity (PA), sedentary behaviors, and dietary behaviors. This study examines 8-year trends in these behaviors in US adolescents ages 11 to 16.METHODS: Nationally representative samples of US students in grades 6 to 10 were recruited during the 2001-2002 (N = 14 607), 2005-2006 (N = 9150), and 2009-2010 (N = 10 848) school years by using multistage stratified designs, with census regions and grades as strata, and school districts as the primary sampling units. African-American and Hispanic students were oversampled to obtain better estimates for those groups. Using the Health Behavior in School-aged Children quadrennial surveys, identical questions assessed BMI, PA, and sedentary and dietary behaviors at each school year. Logistic and linear regression analyses were conducted taking into account the sampling design and controlling for age, gender, race/ethnicity, and family affluence.RESULTS: Across the quadrennial surveys, significant increases were identified in number of days with at least 60 minutes of PA, daily consumption of fruits and vegetables, eating breakfast on weekdays and weekends, and BMI. Television viewing and consumption of sweets and sweetened beverages decreased across this same period. These same patterns were seen in all racial/ethnic groups.CONCLUSIONS: These patterns suggest that public health efforts to improve the obesity-related behaviors of US adolescents may be having some success. However, alternative explanations for the increase in BMI over the same period need to be considered.