Project EAT-III: Eating Among Teens and Young Adults

描述(申请人提供)：拟议的纵向和重复横断面研究，项目Eat-IN，旨在加强我们对青春期和成年期影响体重状况和相关行为的环境、个人和行为因素的了解，包括体重控制行为、饮食摄入量和体力活动。项目Eat-III要解决的主要研究问题是：1)随着青少年青春期和青春期的发展以及关键的发育和过渡期，体重状况和相关行为在10年内是如何纵向变化的？2)在过去10年中，体重状况和相关行为发生了哪些长期变化？3)对体重状况和相关行为最有效的环境、个人和行为影响是什么？4)不同层次的环境、个人和行为影响如何共同影响体重控制行为、饮食摄入量、体力活动，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年健康人目标相比如何？6)在性别、民族/种族和社会经济地位之间，体重状况和相关行为以及影响因素有哪些明显的差异？EAT-III项目将建立在先前EAT-I和EAT-II项目研究的基础上。1999年，Eat-I项目收集了大量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进行了跟踪。EAT-I和EAT-II项目提供了非常丰富的信息，并产生了72篇科学论文。为了检验10年的纵向趋势并更多地了解青年人口，将跟踪先前建立的项目EAT研究人群(N=2400名早期和中期青年)。为了研究1999-2010年间的长期趋势，并探索邻居、学校和同伴的影响范围比之前的研究浪潮所评估的范围更广，将招募一组新的青少年(N=2400名中、早期青少年)。EAT-III项目将提供关于体重状况、体重控制行为、饮食摄入量和体力活动从青春期早期到成年期后期的变化以及对这些结果的多层影响的数据。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，并将指导开发更有效的干预措施，以促进健康饮食和体育活动，降低肥胖率。

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.