Household Environmental Weight Gain Prevention

肥胖是一种全国性的流行病，被广泛认为是源于环境的 迫切需要针对环境和个人层面对肥胖的影响的预防干预措施。这项拟议研究的主要目的是评估家庭一级的体重增加预防干预措施，其中包括环境变化和个人水平的行为变化部分。440个家庭将被招募并随机分成两组，为期一年：1)家庭环境体重增加预防计划或2)只提供一般行为体重控制建议的控制计划，主要结果是家庭体重水平的变化 在1年的干预期内。家庭环境体重增加预防计划包括通过电视时间限制装置减少观看电视的机会；减少家庭获得高脂肪/能量的预先包装食品和减少使用快餐店的频率；通过向每个家庭提供家庭秤来增加自我称重的频率。此外，个人级别的行为改变组件的目标 与家庭环境变化相适应的特定饮食和锻炼行为，以促进体重控制。干预计划的形式包括每月6次面对面的小组会议，12次每月通讯，6次鼓励电话，以及通过电话和电子邮件持续接触干预人员。控制组计划包括12个月的时事通讯，提供控制体重的一般行为建议。 主要结果是在治疗开始一年后测量的家庭水平体重百分比变化。次要结果是能量摄入量、体力活动、看电视时间和自我称重频率的变化。据假设，干预家庭在1年的干预期内体重增加将显著低于随机分配到对照组的家庭。

Obesity is a national epidemic that is widely recognized to be environmental in origin, Primary prevention interventions that address both environmental and individual-level influences on obesity are urgently needed. The primary aim of the proposed study is to evaluate a household-level weight-gain prevention intervention that includes both environmental change and individual-level behavior change components. Four hundred forty households will be recruited and randomized to one of two groups for a 1-year period: 1) household environmental weight-gain prevention program or 2) control program that provides only general behavioral weight control recommendations The primary outcome is household-level change in body weight over the 1-year intervention period. The household environmental weight-gain prevention program includes reduced access to television viewing via a television time-limiting device; reduced household availability of high fat/energy prepackaged foods and less frequent fast food restaurant use; and increased frequency of self-weighing with the provision of a home scale to each household. In addition, the individual-level behavioral change component targets specific eating and exercise behaviors that dovetail with the household environmental changes to promote weight control. The intervention program format consists of 6 monthly face-to-face group meetings, 12 monthly newsletters, 6 encouragement telephone calls, and continuous access to intervention staff via telephone and email. The control group program consists of 12 monthly newsletters that provide general behavioral recommendations for weight control. The primary outcome is household-level percent weight change measured one year following the initiation of treatment. Secondary outcomes are changes in energy intake, physical activity, television viewing time, and frequency of self-weighing. It is hypothesized that intervention households will gain significantly less weight over the 1-year intervention period than households randomized to the control group.