Augmentative effects of sleep in mirror exposure

对身体不满非常普遍，尤其是在女性人群中，并与许多社会心理后遗症有关。照镜子（ME）已被证明能显著提高身体满意度。尽管这些有希望的结果，治疗后的身体不满往往仍然是ME后临床显著。从理论角度来看，ME可以被认为是一种训练情境，参与者在面对自己的身体时学会容忍负面情绪。ME可以实现会话内和会话间的习惯；此外，肌痛性脑脊髓炎被认为挑战了先前存在的与身体有关的记忆和经验，目的是通过形成和巩固新的记忆痕迹来重新塑造与身体有关的信息的记忆。从这个角度来看，一种通过习惯化和形成新的记忆痕迹来促进对负面身体相关情绪的容忍的方法可能是增强镜像暴露效果的有效方法。这就是本项目建议的目的。在一项预先登记的研究中，n = 262名对身体高度不满的女性被随机分配到等待名单对照组（WL）、反复ME组和小睡组（ME+ n）或反复ME组和清醒期（ME+W）。ME+N和ME+W将分别在三周内的三天内接受两次暴露，其中在ME阶段一和阶段二（第一天）、三和阶段四（第二天）以及五和阶段六（第三天）之间进行小睡和清醒（90分钟）。主要结果是从基线到干预/等待期结束和三个月随访时身体不满意程度的变化。

Body dissatisfaction is highly prevalent especially among the female population and is associated with a number of psychosocial sequelae. Mirror exposure (ME) has been shown to significantly improve body satisfaction. Despite these promising results, post-treatment body dissatisfaction is often still clinically significant after ME. From a theoretical perspective, ME can be considered a training situation in which participants learn to tolerate negative emotions when confronted with their body. ME enables within- and between-session habituation; in addition, ME is thought to challenge pre-existing body-related memories and experiences with the aim to re-shape the memory for body-related information by forming and consolidating new memory traces. From this perspective, an approach that facilitates the toleration of negative body-related emotions by habituation and the formation of new memory traces could be an effective way to augment the efficacy of mirror exposure. This is the aim of the present project proposal. In a pre-registered study, n = 262 women with high body dissatisfaction are randomly allocated to either a waitlist control group (WL), a group with repeated ME followed by a nap (ME+N) or to a group of repeated ME followed by a comparable wake period (ME+W). ME+N and ME+W will receive two exposure sessions each on three exposure days distributed over three weeks, whereby nap and wake period (90 minutes) will occur between ME session one and two (day one), three and four (day two) and five and six (day three). Primary outcome is change in measures of body dissatisfaction from baseline to end of intervention/waiting period and at three-months follow-up.