Endocrine and Bariatric Surgery Unit, Hospital Clinico Universitario, Valencia, Spain.
Obes Facts. 2012;5(3):339-48. doi: 10.1159/000339769. Epub 2012 Jun 12.
BACKGROUND/AIMS: The goal of this study was to analyze the likelihood of patients undergoing Roux-en-Y gastric bypass (RYGB) to recover a normal daily food intake, and the possible influence of dietary and exercise habits on long-term weight loss.
The sample included 107 morbidly obese postoperative patients with at least 1 year of follow-up. The data collected included anthropometry, dietary and exercise habits, and information on ingested food. The unpaired Student's t test and the multivariate step-by-step regression were used in the analysis.
The mean preoperative BMI was 50.7 ± 11.8 kg/m(2), which had decreased at the moment of survey to 31.7 ± 5.4 kg/m(2). The mean % Excess of BMI Lost (%EBMIL) was 77.4 ± 23.7%. The nutritional components of diet were similar to those for the nonobese population. There were no significant differences in %EBMIL regarding number of meals, social habits, components of diet, or amount of exercise. The daily mean caloric intake (1,364 ± 293 kcal) was the only parameter significantly related to the %EBMIL outcome. More than 30% of the patients had intolerance to certain foods.
Obese patients undergoing RYGB can establish a postoperative lifestyle and diet similar to the ideal. Only the daily amount of ingested calories demonstrated a statistically significant influence on weight loss over time.
背景/目的：本研究旨在分析行 Roux-en-Y 胃旁路术（RYGB）的患者恢复正常日常食物摄入量的可能性，以及饮食和运动习惯对长期减重的可能影响。
该样本包括 107 例接受过肥胖症手术且随访时间至少 1 年的术后患者。收集的数据包括人体测量学、饮食和运动习惯以及摄入食物的信息。采用单样本 t 检验和多元逐步回归进行分析。
术前 BMI 的平均值为 50.7 ± 11.8 kg/m²，在调查时已降至 31.7 ± 5.4 kg/m²。BMI 多余部分的平均百分比（%EBMIL）为 77.4 ± 23.7%。饮食的营养成分与非肥胖人群相似。在进餐次数、社会习惯、饮食成分或运动量方面，%EBMIL 没有显著差异。每日平均热量摄入（1364 ± 293 kcal）是唯一与%EBMIL 结果显著相关的参数。超过 30%的患者对某些食物不耐受。
接受 RYGB 的肥胖患者可以建立术后生活方式和饮食，与理想情况相似。只有每日摄入的卡路里量对长期体重减轻具有统计学意义上的影响。
