USDA/ARS Children's Nutrition Research Center, Department of Pediatrics-Nutrition, Baylor College of Medicine, Houston, TX, USA.
J Pediatr. 2011 Apr;158(4):624-7. doi: 10.1016/j.jpeds.2010.09.049. Epub 2010 Oct 30.
To compare the differential efficacy of a weight loss program for Mexican-American children who are overweight, obese, and severely obese.
Study participants were enrolled in an intensive weight loss intervention aimed at improving eating and physical activity behaviors with behavior modification strategies. Participants included 212 children (45% female) between the ages of 9 and 14 (mean = 12.0, standard deviation = 0.7). All participants were classified as overweight, obese, or severely obese.
Repeated measures analyses revealed that children in the overweight, obese, and severely obese weight categories differed significantly in standardized body mass index (zBMI) decreases at baseline, 3, 6, and 12 months (F = 4.57, P < .01, η(p)(2) = .06). Follow-up paired samples t tests showed a significant change in zBMI from baseline to 3 and 6 months for children in the overweight, obese, and severely obese weight categories. However, at 12 months only the overweight and obese students continued to show significant improvement from baseline in zBMI.
These findings suggest that an intensive behavioral weight loss intervention that has demonstrated efficacy for decreasing zBMI may have incrementally smaller effects for children as weight classification increases.
比较针对超重、肥胖和极重度肥胖的墨西哥裔美国儿童的减肥计划的差异疗效。
研究参与者被纳入一项旨在通过行为修正策略改善饮食和身体活动行为的强化减肥干预计划。参与者包括 212 名年龄在 9 至 14 岁之间的儿童（45%为女性）（平均值=12.0，标准差=0.7）。所有参与者均被归类为超重、肥胖或极重度肥胖。
重复测量分析显示，在基线、3、6 和 12 个月时，超重、肥胖和极重度肥胖体重类别的儿童在标准化体重指数（zBMI）下降方面存在显著差异（F=4.57，P<.01，η(p)(2)=.06）。随访配对样本 t 检验显示，超重、肥胖和极重度肥胖体重类别的儿童的 zBMI 从基线到 3 个月和 6 个月均有显著变化。然而，在 12 个月时，只有超重和肥胖的学生的 zBMI 继续从基线显著改善。
这些发现表明，已证明对降低 zBMI 有效的强化行为减肥干预措施可能随着体重分类的增加而对儿童的影响逐渐减小。
