利用互联网进行体重管理：一项随机对照试验

Weight management using the internet a randomized controlled trial.

作者信息

Hunter Christine M, Peterson Alan L, Alvarez Lisa M, Poston Walker C, Brundige Antoinette R, Haddock C Keith, Van Brunt David L, Foreyt John P

机构信息

Division of Diabetes, Endocrinology, and Metabolic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland 20892, USA.

出版信息

Am J Prev Med. 2008 Feb;34(2):119-26. doi: 10.1016/j.amepre.2007.09.026.

DOI:10.1016/j.amepre.2007.09.026

PMID:18201641

Abstract

BACKGROUND

Most weight-loss research targets obese individuals who desire large weight reductions. However, evaluation of weight-gain prevention in overweight individuals is also critical as most Americans become obese as a result of a gradual gain of 1-2 pounds per year over many years.

METHOD

This study evaluated the efficacy of an Internet-based program for weight-loss and weight-gain prevention with a two-group, prospective, randomized controlled trial. A military medical research center with a population of 17,000 active-duty military personnel supplied 446 overweight individuals (222 men; 224 women) with a mean age of 34 years and a mean BMI of 29. Recruitment and study participation occurred 2003-2005 and data were analyzed in 2006. Participants were randomly assigned to receive the 6-month behavioral Internet treatment (BIT, n=227) or usual care (n=224). Change in body weight, BMI, percent body fat, and waist circumference; presented as group by time interactions, were measured.

RESULTS

After 6 months, completers who received BIT lost 1.3 kg while those assigned to usual care gained 0.6 kg (F((df=366))=24.17; I<0.001). Results were similar for the intention-to-treat model. BIT participants also had significant changes in BMI (-0.5 vs +0.2 kg/m(2); F((df=366))=24.58); percent body fat (-0.4 vs +0.6%; F((df=366))=10.45); and waist circumference (-2.1 vs -0.4 cm; F((df=366))=17.09); p<0.001 for all.

CONCLUSIONS

Internet-based weight-management interventions result in small amounts of weight loss, prevent weight gain, and have potential for widespread dissemination as a population health approach.

TRIAL REGISTRATION

NCT00417599.

摘要

背景

大多数减肥研究针对的是希望大幅减轻体重的肥胖个体。然而，评估超重个体预防体重增加也至关重要，因为大多数美国人肥胖是多年来每年逐渐增加1至2磅的结果。

方法

本研究采用两组前瞻性随机对照试验，评估基于互联网的减肥和预防体重增加项目的疗效。一个拥有17000名现役军人的军事医学研究中心为446名超重个体（22名男性；224名女性）提供了服务，这些个体的平均年龄为34岁，平均体重指数为29。招募和研究参与时间为2003年至2005年，2006年对数据进行分析。参与者被随机分配接受为期6个月的行为互联网治疗（BIT，n = 227）或常规护理（n = 224）。测量体重、体重指数、体脂百分比和腰围的变化，以组×时间交互作用表示。

结果

6个月后，接受BIT的完成者体重减轻了1.3千克，而分配到常规护理组的人体重增加了0.6千克（F((自由度 = 366)) = 24.17；P < 0.001）。意向性分析模型的结果相似。BIT参与者的体重指数（-0.5 vs +0.2千克/米²；F((自由度 = 366)) = 24.58）、体脂百分比（-0.4 vs +0.6%；F((自由度 = 366)) = 10.45）和腰围（-2.1 vs -0.4厘米；F((自由度 = 366)) = 17.09）也有显著变化；所有P值均<0.001。