TY -的盟Feldhege Johannes盟——Moessner马库斯AU -鲍尔,斯蒂芬妮PY - 2021 DA - 2021/10/6 TI -在线Pro-Eating障碍的不利影响社区减肥和理想体重:纵向观察研究乔- J地中海互联网Res SP - e27153六世- 23 - 10 KW - Pro-Eating障碍社区KW -减肥KW -体重KW -社会媒体KW -线性增长模型千瓦饮食失调KW -血管畅通KW - Reddit AB -背景:在线支持饮食失调(pro-ED)社区被认为是有害的，因为它们对用户的身体不满、节食和寻求帮助产生了不利影响。到目前为止，还不清楚参与ed社区会在多大程度上影响用户的体重和期望的体重减轻。目的:本研究旨在调查社交媒体网站Reddit上支持ed社区(r/proed)用户当前体重和期望体重随时间的变化。方法:在15个月的时间里，收集了1170名用户的数据以及他们与支持ed的社区分享的未经请求的体重信息。线性增长模型用于模拟用户当前和期望BMI随时间的变化。结果:当前和期望的BMI都随着时间的推移而下降，预测速率分别为每周0.087和0.015 BMI点。用户在社区中的活跃程度减缓了体重下降，越活跃的用户体重下降越多。基线体重指数较高的用户体重减轻幅度更大，但即使基线体重非常低(BMI <17 kg/m2)的用户在参与期间体重也有所减轻。此外，随着时间的推移，用户期望的体重也在减少，许多人追求极低的、不切实际的体重目标。 Changes in the desired weight were moderated by the baseline current BMI and baseline desired BMI. Users with higher desired weight and lower body weight at baseline decreased their desired weight more over time. Conclusions: This is the first study to demonstrate the detrimental effects of pro-ED communities in a longitudinal study based on a large data set of user-generated online data. The results extend the literature detailing the harmful effects of online pro-ED communities by showing users’ weight loss, decreases in desired weight, and that higher activity levels lead to greater weight loss. Users could be driven to pursue very low, unrealistic weight loss goals by images of very thin bodies presented in these communities. SN - 1438-8871 UR - //www.mybigtv.com/2021/10/e27153 UR - https://doi.org/10.2196/27153 UR - http://www.ncbi.nlm.nih.gov/pubmed/34612830 DO - 10.2196/27153 ID - info:doi/10.2196/27153 ER -