Weight and weight-related behaviors in youth: Influence of the family context

描述（由申请人提供）：超过34%的青少年超重或肥胖。观察性研究表明，家庭行为，如家庭聚餐或父母的角色榜样，可能在塑造青少年行为和由此产生的体重状况方面发挥重要作用。然而，研究结果并不一致。家庭系统理论认为，必须在全球家庭背景下理解家庭行为。全球家庭因素，如亲子关系质量或一般家庭功能，影响青少年如何体验家庭行为。因此，这些因素可能是家庭行为和青少年结果之间联系的潜在强有力的调节因素。忽略这些家庭行为发生的家庭背景可以解释不一致的研究结果。我们建议通过开展一项大型队列研究来解决这一根本差距，以确定具体的全球家庭因素如何影响家庭行为与青少年体重相关结果之间的关联。本提案的总体目标是研究家庭行为和整体家庭因素与青少年体重和体重相关行为之间的独立和互动关系。为了实现这一目标，我们将使用纵向重复测量数据和新收集的来自今日成长研究2 （GUTS2）的调查数据，这是一项正在进行的青少年队列研究。我们将把青少年的数据与他们母亲的数据联系起来，她们是护士健康研究2的参与者。本研究规模大（n=10,442），设计前瞻性，以健全行为理论为基础，采用母亲和青少年的多层次数据，为研究家庭环境对青少年体重和体重相关行为的影响提供了无与伦比的机会。本研究结果将为有效的家庭肥胖预防干预提供急需的基础。

DESCRIPTION (provided by applicant): Over 34% of adolescents are overweight or obese. Observational research suggests that family behaviors, such as family meals or parental role modeling, may play an important role in shaping adolescent behaviors and resulting weight status. However, results are not consistent across studies. Family systems theory asserts that family behaviors must be understood within the global family context. Global family factors, such as parent-child relationship quality or general family functioning, influence how family behaviors are experienced by the adolescents. Thus these factors may be potentially powerful modifiers of the associations between family behaviors and adolescent outcomes. Omitting the family context within which these family behaviors occur may explain the inconsistent research findings. We propose to address this fundamental gap by conducting a large cohort study to determine how specific global family factors influence associations between family behaviors and adolescent weight-related outcomes. The overall objective of this proposal is to examine independent and interactive associations of family behaviors and global family factors with adolescent weight and with weight-related behaviors. To achieve this objective, we will use longitudinal repeated measures data and newly collected survey data from the Growing Up Today Study 2 (GUTS2), an ongoing cohort study of adolescents. We will link adolescents' data to data from their mothers, who are participants in the Nurses' Health Study 2. The proposed study's large size (n=10,442), prospective design, basis in sound behavior theory, and multi-level data on mothers and adolescents provide an unsurpassed opportunity to study the influence of the family context on adolescent weight and weight-related behaviors. Results of this study will provide a much-needed basis for effective family-based obesity prevention interventions. PUBLIC HEALTH RELEVANCE: By examining a broad range of family behaviors and global family factors, the findings from this study will enhance our understanding of how factors within the family environment influence adolescent weight and weight-related behaviors. This information will guide the development of more effective family-based interventions to promote healthful weight-related behaviors and prevent obesity among adolescents.