Oregon Research Institute, Eugene, OR, USA.
Int J Obes (Lond). 2018 Mar;42(3):462-468. doi: 10.1038/ijo.2017.251. Epub 2017 Oct 9.
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, completing pretest, posttest, and 6, 12 and 24-month follow-up assessments.
Project Health participants showed significantly smaller increases in measured body mass index (BMI) through 2-year follow-up than both Healthy Weight participants and controls (both d=-0.18), 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 and 3% vs 8% 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-h 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.
比较健康体重肥胖和饮食失调预防计划，该计划促进参与者驱动的逐渐生活方式改变，使能量摄入和消耗达到平衡，与新的干预措施，即项目健康，该措施增加活动，引起对不健康饮食、久坐不动的生活方式和过多体脂的认知失调，以及肥胖教育视频对照组。
由于体重问题而处于肥胖和饮食失调风险中的大学生（N=364，72%为女性）被随机分配到条件组，完成前测、后测以及 6、12 和 24 个月的随访评估。
与健康体重组和对照组相比，项目健康组参与者在 2 年随访期间的体重指数（BMI）测量值增加幅度显著较小（d=-0.18），并且在 2 年随访期间超重/肥胖的发生率显著降低（13 比健康体重组和对照组分别为 21%和 22%）。与对照组相比，健康体重组和项目健康组在 2 年随访期间的饮食障碍症状明显减少。与对照组相比，健康体重组和项目健康组在随访期间的饮食障碍发生率略低（分别为 3%和 3%比 8%）。
与积极匹配的干预措施和最小干预对照组相比，项目健康组 BMI 增加幅度和未来超重/肥胖的发生率降低，这是值得注意的，尤其是考虑到干预持续时间较短。与对照组相比，健康体重组和项目健康组的饮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可以增加减肥效果。然而，两者的效果通常较小，饮食障碍发生率的预防效果也只是略有改善，这可能是因为干预组包括了男女两性，从而降低了饮食障碍的发生率和敏感性。
