Mediators of two selective prevention interventions targeting both obesity and eating disorders.
Mediators of two selective prevention interventions targeting both obesity and eating disorders.
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针对肥胖和饮食失调的两种选择性预防干预措施的中介者。
DOI：
10.1016/j.brat.2018.04.004
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发表时间：
2018
影响因子：
4.1
通讯作者：
Stice,Eric
中科院分区：
文献类型：
--
作者：
Rohde,Paul;Desjardins,ChristopherD;Arigo,Danielle;Shaw,Heather;Stice,Eric
本研究测试了两种针对肥胖和饮食失调的选择性预防干预措施(健康体重和新开发的健康项目)相对于视频控制的效果背后的假设机制。测试检查了先前报道的预防体重增加和饮食失调症状的显著效果的中介。有体重问题的大学生(N=BMI364；72%的女性)被随机分配到干预后的两年内进行评估。项目健康参与者在7个拟议的中介因素中有2个相对于比较(即认知不协调，不健康的西方饮食模式)有显著改善，但这些变量的变化并没有中介其对长期 变化的影响。对于两种实验干预措施，有两个变量成为饮食失调预防效果的完全中介：身体不满和负面情绪。分析未能支持进食障碍症状的变化中介条件对BMI增加的影响的探索性假设。这份报告是第一次审查旨在预防体重增加和饮食失调的项目的调解，特别是在混合性别群体中。中介分析对于确定干预行动的机制是必不可少的，这可以为预防计划的改进提供信息。
The present study tested hypothesized mechanisms underlying the effects of two selective prevention interventions targeting both obesity and eating disorders (Healthy Weightand the newly developedProject Health), relative to video control. Tests examined mediation for the significant weight gain prevention and eating disorder symptom prevention effects previously reported. College students (N= 364; 72% women) with weight concerns were randomized to condition and assessed for 2-years post-intervention.Project Healthparticipants had significant improvements in 2 of the 7 proposed mediators relative to comparisons (i.e., cognitive dissonance, the unhealthy Western dietary pattern) but change in these variables did not mediate its effect on long-term BMI change. Two variables emerged as full mediators of the eating disorder prevention effects for both experimental interventions: body dissatisfaction and negative affect. Analyses failed to support the exploratory hypothesis that change in eating disorder symptoms mediated the effects of condition on BMI gain. This report is the among the first to examine mediation for programs aimed at preventing both weight gain and eating disorders, particularly in mixed-gender groups. Mediational analyses are essential in identifying the mechanism of intervention action, which can inform improvements to prevention programs.