White Marney A, Masheb Robin M, Rothschild Bruce S, Burke-Martindale Carolyn H, Grilo Carlos M
Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06520, USA.
Obes Surg. 2007 Jan;17(1):74-81. doi: 10.1007/s11695-007-9009-2.
Research has shown that obese individuals report goal weight losses in excess of those achievable with standard treatments for obesity. Little is known about the goal weights of bariatric surgery patients, or the prognostic significance of unrealistic goals on surgical outcomes, including weight losses and changes in associated behavioral and psychological domains.
A consecutive series of 139 gastric bypass (GBP) surgery candidates reported weight loss goals prior to GBP surgery and at 6 and 12 months after surgery. Dream, Happy, Acceptable, and Disappointed weights following treatment were reported.
Consistent with previous research, goal weights at baseline were lower than those attainable even with surgery. Repeated measures analyses, controlling for baseline BMI, revealed no changes in any of the goal weights from baseline to 6 and 12 months following surgery. After controlling for baseline BMI, weight loss expectations at baseline did not predict weight loss at either follow-up point. Unrealistic weight goals were also largely unrelated to psychological functioning prior to surgery, and were unrelated to the magnitude of the improvements in eating-related behaviors and psychological functioning after surgery. Interestingly, mean goal weights parallel current weight classifications: i.e., dream BMI corresponds with the cutoff for normal (BMI < or =25), happy BMI (=27) with the lower bound for "overweight", and acceptable BMI (=30) with the lower bound for obesity.
Among GBP surgery patients, goal weights are remarkably consistent over time, and unrealistic weight loss goals do not appear to have negative prognostic significance on surgical outcomes.
研究表明，肥胖个体报告的目标体重减轻幅度超过了肥胖标准治疗所能达到的水平。对于减肥手术患者的目标体重，以及不切实际的目标对手术结果（包括体重减轻以及相关行为和心理领域的变化）的预后意义，人们知之甚少。
连续选取139例胃旁路手术（GBP）候选患者，报告其在GBP手术前、术后6个月和12个月时的体重减轻目标。报告了治疗后的理想体重、满意体重、可接受体重和失望体重。
与先前的研究一致，基线时的目标体重低于即使通过手术也能达到的体重。在控制基线BMI后进行的重复测量分析显示，从基线到术后6个月和12个月，任何目标体重均无变化。在控制基线BMI后，基线时的体重减轻预期在两个随访点均不能预测体重减轻情况。不切实际的体重目标在很大程度上也与手术前的心理功能无关，并且与术后饮食相关行为和心理功能改善的程度无关。有趣的是，平均目标体重与当前的体重分类平行：即理想BMI对应正常范围的临界值（BMI≤25），满意BMI（=27）对应“超重”的下限，可接受BMI（=30）对应肥胖的下限。
在GBP手术患者中，目标体重随时间推移非常一致，并且不切实际的体重减轻目标似乎对手术结果没有负面的预后意义。
