An experimental therapeutics test of whether adding dissonance-induction activities improves the effectiveness of a selective obesity and eating disorder prevention program.
An experimental therapeutics test of whether adding dissonance-induction activities improves the effectiveness of a selective obesity and eating disorder prevention program.
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DOI：
10.1038/ijo.2017.251
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发表时间：
2018-03
期刊：
影响因子：
--
通讯作者：
Gau JM
中科院分区：
文献类型：
--
作者：
Stice E;Rohde P;Shaw H;Gau JM
比较健康体重肥胖和饮食失调预防计划，促进参与者驱动的逐渐改变生活方式，使能量摄入和支出达到平衡，到一个新的干预措施，健康项目，增加活动，创造关于不健康饮食的认知失调，久坐不动的生活方式，和多余的身体脂肪，以及肥胖教育视频控制条件。由于体重问题而有两种结局风险的大学生（N = 364，72%女性）被随机分配到条件并完成预测试，后测试以及6，12和24个月的随访评估。健康项目参与者在1年和2年随访时的BMI测量值的增加显著小于健康体重参与者和对照组（均为d =-0.18），并且在2年随访期间超重/肥胖的发生率显著低于健康体重参与者和对照组（13% vs. 21%和22%）。通过2年的随访，健康体重和健康项目参与者的饮食失调症状明显比对照组减少。健康体重和健康项目参与者在随访期间的进食障碍发病率略低于对照组（分别为3%和3%对9%）。相对于主动匹配干预和最小干预对照条件，项目健康的BMI增加和未来超重/肥胖发作减少值得注意，特别是考虑到6小时的干预持续时间较短。与对照组相比，健康体重和健康项目的进食障碍症状减少也令人鼓舞。结果表明，增加不和谐诱导活动增加减肥效果。然而，两者的影响一般都很小，饮食失调发作的预防效果也很小，可能是因为干预组包括了两种性别，这降低了饮食失调的发病率和敏感性。
Compare the Healthy Weight obesity and eating disorder prevention program, which promotes participant-driven gradual lifestyle changes to bring energy intake and expenditure into balance, to a new intervention, Project Health, which adds activities to create cognitive dissonance about unhealthy eating, a sedentary lifestyle, and excess body fat, and an obesity education video control condition. College students at risk for both outcomes because of weight concerns (N = 364, 72% female) were randomized to condition and completed pretest, posttest, and 6, 12, and 24-month follow-up assessments. Project Health participants showed significantly smaller increases in measured BMI at 1- and 2-year follow-up than both Healthy Weight participants and controls (both d = −.18), and significantly lower onset of overweight/obesity over 2-year follow-up than Healthy Weight participants and controls (13% vs. 21% and 22%). Healthy Weight and Project Health participants showed significantly greater eating disorder symptom reductions than controls through 2-year follow-up. Healthy Weight and Project Health participants showed marginally lower eating disorder onset over follow-up than controls (3% & 3% vs. 9% respectively). The reduced increases in BMI and future overweight/obesity onset for Project Health relative to both an active matched intervention and a minimal intervention control condition are noteworthy, especially given the short 6-hour intervention duration. The reduction in eating disorder symptoms for Healthy Weight and Project Health relative to controls was also encouraging. Results suggest that adding dissonance-induction activities increased weight loss effects. Yet, effects for both were generally small and the eating disorder onset prevention effects were only marginal, potentially because intervention groups included both sexes, which reduced eating disorder incidence and sensitivity.
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