Sysko Robyn, Walsh B Timothy, Schebendach Janet, Wilson G Terence
Department of Psychology, Rutgers University, Piscataway, NJ, USA.
Am J Clin Nutr. 2005 Aug;82(2):296-301. doi: 10.1093/ajcn.82.2.296.
Disturbed eating and severe caloric restriction are characteristic features of patients with anorexia nervosa (AN). Despite the importance of eating behavior in the presentation of AN, there have been relatively few objective laboratory studies of eating behavior among persons with eating disorders.
The purpose of the study was to obtain objective measures of eating behavior among patients with AN before and immediately after weight restoration and to compare those measures with measures among control subjects.
Twelve patients hospitalized for AN and 12 control subjects participated in the study. Eleven of the 12 patients were retested at 90% of ideal body weight.
The average meal consumption was 103.97 +/- 102.08 g for patients at low weight and 178.03 +/- 202.97 g after weight restoration (NS). Control subjects consumed significantly more than did AN patients at both time points, and the average meal size was 489.58 +/- 187.64 g. Patients showed significant decreases in psychological and eating-disordered symptoms after weight restoration.
These data suggest that patients with AN show a persistent disturbance in eating behavior, despite the restoration of body weight and significant improvements in eating-disordered and psychological symptoms.
饮食紊乱和严重热量限制是神经性厌食症（AN）患者的典型特征。尽管饮食行为在AN的表现中很重要，但针对饮食失调患者的饮食行为进行的客观实验室研究相对较少。
本研究旨在获取AN患者体重恢复前及恢复后即刻饮食行为的客观测量数据，并将这些数据与对照组受试者的数据进行比较。
12名因AN住院的患者和12名对照受试者参与了本研究。12名患者中的11名在达到理想体重的90%时接受了重新测试。
体重较低时患者的平均每餐摄入量为103.97±102.08克，体重恢复后为178.03±202.97克（无显著差异）。在两个时间点，对照受试者的摄入量均显著高于AN患者，平均每餐量为489.58±187.64克。体重恢复后，患者的心理和饮食失调症状显著减轻。
这些数据表明，AN患者尽管体重恢复且饮食失调和心理症状有显著改善，但仍存在持续的饮食行为紊乱。
