Project EAT-III: Eating Among Teens and Young Adults

描述（由申请人提供）：拟议的纵向和重复的横断面研究，项目EAT-IN，旨在提高我们对影响体重状况和相关行为的环境，个人和行为因素的理解，包括体重控制行为，饮食摄入量和身体活动，在青春期和青年期。在EAT-III项目中要解决的主要研究问题是：1）随着青少年进入青春期和青年期，并经历关键的发展和过渡时期，体重状况和相关行为在10年内如何纵向变化？2)在过去的10年里，体重状况和相关行为发生了哪些长期变化？3)环境、个人和行为对体重状况和相关行为的影响最大的是什么？4)不同层次的环境、个人和行为影响如何共同作用，影响体重控制行为、饮食摄入、体育活动，进而影响体重状况？5)随着2010年的临近，体重状况和相关行为与2010年健康人群目标相比如何？6)体重状况和相关行为以及影响因素在性别、种族/人种和社会经济地位方面存在哪些明显差异？EAT-III项目将建立在以前的EAT-I和EAT-II项目研究的基础上。1999年，EAT-I项目收集了一大批不同种族和社会经济背景的青少年样本的调查和人体测量数据。2004年，EAT-II项目对最初的参与者采取了后续行动。EAT-I和EAT-II项目提供了大量信息，产生了72篇科学论文。为了检查10年的纵向趋势并了解更多关于年轻成人人群的信息，将对先前建立的EAT项目研究人群进行随访（N=2400名早期和中期年轻成人）。为了检查1999-2010年间的长期趋势，并探索比之前研究浪潮中评估的更广泛的社区、学校和同伴影响，将招募一批新的青少年（N=2400名早期和中期青少年）。EAT-III项目将提供关于体重状况、体重控制行为、饮食摄入和身体活动从青春期早期到晚期的变化以及对这些结果的多层次影响的数据。研究结果将增加我们对影响体重状况和相关行为的长期预测因素的理论理解，并将指导制定更有效的干预措施，以促进健康饮食和体育活动，减少肥胖的患病率。

DESCRIPTION (provided by applicant): The proposed longitudinal and repeated cross-sectional study, Project EAT-IN, aims to enhance our understanding of environmental, personal, and behavioral factors that influence weight status and related behaviors, including weight control behaviors, dietary intake, and physical activity, during adolescence and young adulthood. The primary research questions to be addressed in Project EAT-III are: 1) How do weight status and related behaviors change longitudinally over 10 years, as youth progress through adolescence and young adulthood and go through key developmental and transitional periods? 2) What secular changes in weight status and related behaviors have occurred over the past 10 years? 3) What are the most potent environmental, personal, and behavioral influences on weight status and related behaviors? 4) How do different layers of environmental, personal, and behavioral influences work together to affect weight control behaviors, dietary intake, physical activity, and, in turn, weight status? 5) How do weight status and related behaviors compare with the Healthy People 2010 Objectives, as we approach the year 2010? 6) What disparities in weight status and related behaviors and influencing factors are evident across gender, ethnicity/race and socio-economic status? Project EAT-III will build upon the previous Project EAT-I and EAT-II studies. In 1999, Project EAT-I collected survey and anthropometric data on a large, ethnically and socio-economically diverse sample of adolescents. In 2004, Project EAT-II followed up on the original participants. Projects EAT-I and EAT-II have been very informative and have resulted in 72 scientific papers. In order to examine 10-year longitudinal trends and learn more about the young adult population, the previously established Project EAT study population will be followed (N=2400 early and middle young adults). In order to examine secular trends between 1999-2010 and explore a wider range of neighborhood, school, and peer influences than were assessed in previous study waves, a new cohort of adolescents will be recruited (N=2400 early and middle adolescents). Project EAT-III will provide data on how weight status, weight control behaviors, dietary intake, and physical activity change from earlier to later periods of adolescence and young adulthood and the multiple layers of influences on these outcomes. Findings will increase our theoretical understanding of the long-term predictive factors influencing weight status and related behaviors and will guide the development of more effective interventions to promote healthy eating and physical activity and reduce the prevalence of obesity.