The Samuel Dubois Cook Center on Social Equity at Duke University, Durham, North Carolina.
Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
Ethn Dis. 2018 Feb 1;28(1):43-48. doi: 10.18865/ed.28.1.43. eCollection 2018 Winter.
We set out to determine if a primarily Internet-delivered behavioral weight loss intervention produced differential weight loss in African American and non-Hispanic White women, and to identify possible mediators.
Data for this analysis were from a randomized controlled trial, collected at baseline and 4-months.
The intervention included monthly face-to-face group sessions and an Internet component that participants were recommended to use at least once weekly.
We included overweight or obese African American and non-Hispanic White women (n=170), with at least weekly Internet access, who were able to attend group sessions.
Monthly face-to-face group sessions were delivered in large or small groups. The Internet component included automated tailored feedback, self-monitoring tools, written lessons, video resources, problem solving, exercise action planning tools, and social support through message boards.
Multiple linear regression was used to evaluate race group differences in weight change.
Non-Hispanic White women lost more weight than African American women (-5.03% vs.-2.39%, P=.0002). Greater website log-ins and higher change in Eating Behavior Inventory score in non-Hispanic White women partially mediated the race-weight loss relationship.
The weight loss disparity may be addressed through improved website engagement and adoption of weight control behaviors.
本研究旨在确定主要通过互联网提供的行为减肥干预措施是否会导致非裔美国人和非西班牙裔白种女性的体重减轻出现差异，并确定可能的中介因素。
本分析的数据来自一项随机对照试验，在基线和 4 个月时进行了收集。
干预措施包括每月一次的面对面小组会议和互联网部分，建议参与者每周至少使用一次。
我们纳入了超重或肥胖的非裔美国人和非西班牙裔白种女性（n=170），她们每周至少有一次上网的机会，并且能够参加小组会议。
每月一次的面对面小组会议以大或小组的形式进行。互联网部分包括自动定制反馈、自我监测工具、书面课程、视频资源、问题解决、锻炼行动计划工具以及通过留言板提供的社交支持。
使用多元线性回归评估体重变化的种族群体差异。
非西班牙裔白种女性比非裔美国女性体重减轻更多（-5.03%对-2.39%，P=.0002）。非西班牙裔白种女性的网站登录次数增加和饮食行为量表得分变化更大，部分解释了种族与体重减轻之间的关系。
通过提高网站参与度和采用体重控制行为，可能会解决体重减轻的差异问题。
