Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, Chicago, IL 60637, USA.
Int J Eat Disord. 2013 Mar;46(2):140-6. doi: 10.1002/eat.22054. Epub 2012 Sep 18.
Some investigators have suggested subtyping bulimia nervosa (BN) by anorexia nervosa (AN) history. We examined trait-level and momentary eating-related and psychosocial factors in BN with and without an AN history.
Interview, questionnaire, and ecological momentary assessment data of eating-related and psychological symptoms were collected from 122 women with BN, including 43 with (BN+) and 79 without an AN history (BN-).
Body mass index (kg/m(2) ) was lower in BN+ than BN- (p = 0.001). Groups did not differ on trait-level anxiety, shape/weight concerns, psychiatric comorbidity, or dietary restraint; or on momentary anxiety, dietary restriction, binge eating, purging, or exercise frequency, or affective patterns surrounding binge/purge behaviors. Negative affect increased prior to exercise and decreased thereafter in BN+ but not BN-, although groups did not statistically differ.
Results do not support formally subtyping BN by AN history. Exercise in BN+ may modulate negative affect, which could have important treatment implications.
一些研究者建议通过神经性厌食症（AN）病史对神经性贪食症（BN）进行亚型划分。我们研究了有和无 AN 病史的 BN 患者特质水平和即时的与饮食相关的和心理社会因素。
从 122 名 BN 女性患者（包括 43 名有 AN 病史的 BN+和 79 名无 AN 病史的 BN-）中收集了访谈、问卷调查和与饮食相关的心理症状的即时评估数据。
BN+患者的体重指数（kg/m(2) ）低于 BN-（p = 0.001）。两组在特质水平的焦虑、体型/体重担忧、精神共病或饮食限制；或在即时的焦虑、饮食限制、暴食、催吐或运动频率，或围绕暴食/催吐行为的情绪模式方面没有差异。BN+中，负面情绪在运动前增加，运动后减少，但 BN-中没有这种情况。
结果不支持通过 AN 病史对 BN 进行正式的亚型划分。BN+中的运动可能会调节负面情绪，这可能对治疗有重要意义。
