Project EAT-IV: Eating and Activity in Adolescents and Young Adults

描述（由申请人提供）：不良饮食行为、身体活动不足和肥胖是美国青少年和成年人面临的最紧迫的公共卫生问题。其他与体重相关的问题，包括不健康的体重控制做法和身体不满意，鉴于其对健康的不良后果，也值得关注。需要有关这些问题随时间推移的轨迹、它们从一代人传播到下一代以及风险和保护因素的信息来指导公共卫生干预措施。拟议的纵向研究项目 EAT-IV（青少年和年轻人的饮食和活动）建立在之前的研究浪潮的基础上，在这些研究浪潮中，收集了 10 年期间针对不同人群的青春期不同阶段和成年早期的数据。 EAT-IV 项目将把研究参与者的随访期延长至 15 年（1999-2014 年），从青春期（12-18 岁）到青年期（27-33 岁）。数据将从代表不同民族/种族和社会经济背景的大约 2250 名年轻人中收集，他们参与了之前的研究浪潮。此外，首次：1) 数据将在适用时从参与者的重要其他人那里收集（预计 n � 1100）； 2）将对有孩子的参与者进行养育行为评估（预计n = 1240）； 3) 参与者（预计 340 名）的青春期前（9-11 岁）和青少年（12-18 岁）儿童将被招募到研究中，并询问他们的饮食行为、体力活动和体重相关问题。主要研究目的是纵向研究从青春期到青年期以及跨代的生命历程中的饮食行为、活动模式和体重相关问题，以及这些结果的个人和社会环境预测因素。主要研究问题包括： 1. 饮食行为、体力活动模式和体重相关问题如何在 15 年期间（1999-2014 年）在不同样本中进行追踪，从青春期开始一直持续到成年早期？从青春期到成年早期的整个生命过程中，哪些个人层面和社会环境因素可以预测年轻人的这些结果并随着时间的推移影响他们的轨迹？ 2. 青春期的饮食行为、身体活动模式和体重相关问题，以及青春期相关的个人水平和社会环境因素如何预测年轻人在饮食、活动和体重方面的养育方式？这对他们的孩子、下一代青年有什么影响？成年初期的哪些因素会改变这些关联的强度？ 将使用创新和纵向研究策略来解决整个生命过程中关键发育转变中与肥胖和其他体重相关问题相关的重要而及时的问题。研究结果将广泛传播，以指导干预措施、实践和政策的制定，以改善年轻人及其子女与体重相关的健康。

DESCRIPTION (provided by applicant): Poor eating behaviors, inadequate physical activity, and obesity are some of the most pressing public health problems facing youth and adults in the United States. Other weight-related problems, including unhealthy weight control practices and body dissatisfaction, are also of concern given their adverse health consequences. Information on trajectories of these problems over time, their transmission from one generation to the next, and risk and protective factors, is needed to guide public health interventions. The proposed longitudinal study, Project EAT-IV (Eating and Activity in Teens and Young Adults), builds on previous study waves in which data were collected over a 10-year period on a diverse population-based cohort throughout different stages of adolescence and into emerging young adulthood. Project EAT-IV will extend the follow-up of study participants to a 15-year period (1999-2014), from adolescence (ages 12-18) to young adulthood (ages 27-33). Data will be collected from approximately 2250 young adults representing diverse ethnic/racial and socioeconomic backgrounds, who participated in previous study waves. Additionally, for the first time: 1) data will be collected from participants' significant others when applicable (expected n � 1100); 2) parenting practices will be assessed among participants who have children (expected n � 1240); and 3) preadolescent (ages 9-11) and adolescent (ages 12-18) children of participants (expected n � 340) will be recruited into the study and asked about their eating behaviors, physical activity, and weight-related problems. The main study aim is to longitudinally examine eating behaviors, activity patterns, and weight-related problems, along with individual and socio-environmental predictors of these outcomes, over the life course from adolescence to young adulthood and across generations. Key research questions include: 1. How do eating behaviors, physical activity patterns, and weight-related problems track over a 15-year period (1999-2014) in a diverse sample, beginning in adolescence and continuing through young adulthood? What individual-level and socio-environmental factors, throughout the life course from adolescence to young adulthood, predict these outcomes in young adults and influence their trajectories over time? 2. How do eating behaviors, physical activity patterns, and weight-related problems during adolescence, and relevant individual-level and socio-environmental factors in adolescence, predict young adults' parenting practices regarding eating, activity, and weight? What are the implications for their children, the next generation of youth? What factors in young adulthood modify the strength of these associations? Important and timely questions related to obesity and other weight-related problems across key developmental transitions throughout the life course will be addressed using innovative and longitudinal research strategies. Findings will be widely disseminated to guide the development of interventions, practices, and policies to improve the weight-related health of young adults and their children.