Delahanty Linda M, Meigs James B, Hayden Doug, Williamson Donald A, Nathan David M
Diabetes Center, Massachusetts General Hospital, Boston, Massachusetts 02114, USA.
Diabetes Care. 2002 Nov;25(11):1992-8. doi: 10.2337/diacare.25.11.1992.
To determine psychological and behavioral correlates of baseline BMI in the Diabetes Prevention Program (DPP).
Of 1,079 DPP lifestyle intervention participants, 274 completed validated questionnaires at baseline assessing weight loss history, stage of change, self-efficacy, dietary restraint, emotional eating, binge eating, perceived stress, depression, and anxiety.
The mean age of subjects was 52.5 years, 65% were women, and their mean BMI was 33.9 kg/m(2). Higher BMI correlated with more frequent weight cycling (r = 0.50, P < 0.0001) and efforts at weight loss (r = 0.34, P < 0.0001); younger age when first overweight (r = -0.42, P < 0.0001); lower exercise efficacy (r = -0.15, P = 0.015); lower weight loss efficacy (r = -0.21, P < 0.001); a less advanced stage of change for weight loss (r = -0.12, P = 0.04); more perceived stress (r = 0.14, P = 0.02); emotional eating (r = 0.19, P = 0.001); poor dietary restraint (r = -0.14, P = 0.02); binge eating frequency (r = 0.18, P = 0.004) and severity (r = 0.30, P < 0.0001); feeling deprived, angry, or upset while dieting (r = 0.27, P </= 0.0001); and food cravings while dieting (r = 0.31, P < 0.0001). Correlations did not differ as a function of sex; however, correlations of BMI with anxiety and low-fat diet and weight loss self-efficacy differed as a function of ethnicity. In multivariate models, binge eating severity, poor dietary restraint, and food craving were independent correlates of baseline BMI.
Many psychological and behavioral factors are associated with higher BMI in this ethnically diverse group of men and women. Whether strategies that help patients increase levels of dietary restraint and reduce binge eating and food craving lead to long-term weight loss maintenance needs longitudinal study.
确定糖尿病预防计划（DPP）中基线体重指数（BMI）的心理和行为相关因素。
在1079名DPP生活方式干预参与者中，274人在基线时完成了经过验证的问卷调查，评估体重减轻史、改变阶段、自我效能感、饮食节制、情绪化进食、暴饮暴食、感知压力、抑郁和焦虑。
受试者的平均年龄为52.5岁，65%为女性，平均BMI为33.9kg/m²。较高的BMI与更频繁的体重波动（r = 0.50，P < 0.0001）和减肥努力（r = 0.34，P < 0.0001）相关；首次超重时年龄较小（r = -0.42，P < 0.0001）；运动效能较低（r = -0.15，P = 0.015）；体重减轻效能较低（r = -0.21，P < 0.001）；减肥改变阶段较不先进（r = -0.12,P = 0.04）；更多的感知压力（r = 0.14，P = 0.02）；情绪化进食（r = 0.19，P = 0.001）；饮食节制差（r = -0.14，P = 0.02）；暴饮暴食频率（r = 0.18，P = 0.004）和严重程度（r = 0.30，P < 0.0001）；节食时感到被剥夺、愤怒或心烦（r = ）。相关性不因性别而异；然而，BMI与焦虑、低脂饮食和体重减轻自我效能感的相关性因种族而异。在多变量模型中，暴饮暴食严重程度、饮食节制差和食物渴望是基线BMI的独立相关因素。
在这个种族多样化的男性和女性群体中，许多心理和行为因素与较高的BMI相关。有助于患者提高饮食节制水平并减少暴饮暴食和食物渴望的策略是否能导致长期体重维持需要纵向研究。 （注：原文中“r = 0.27, P </= 0.0001”这里的“</=”表述有误，可能影响准确理解，已按正确逻辑翻译）
