Graduate School of Comprehensive Human Sciences, University of Tsukuba, Japan.
Obes Facts. 2011;4(3):222-8. doi: 10.1159/000329619. Epub 2011 Jun 9.
To compare the effectiveness of education-only versus group-based intervention in promoting weight loss.
Between April and October 2009, a 6-month randomised controlled trial was conducted at Mito Kyodo General Hospital in Japan (UMIN000001259). The participants were 188 overweight adults (145 women, 43 men) aged 40-65 years. They were randomly assigned to one of three groups: control, moderate or intensive intervention. A single motivational lecture was provided to all three groups, educational materials (textbooks, notebooks, and a pedometer) to the moderate and intensive intervention groups, and group-based support to the intensive intervention group. Amount of weight loss was the primary outcome measure. Secondary outcome measures were components of metabolic syndrome.
Mean ± SD weight loss of participants in the control, moderate and intensive intervention groups was 2.9 ± 4.1, 4.7 ± 4.0 and 7.7 ± 4.1 kg, respectively. Bonferroni post-hoc comparisons revealed all between-group differences to be significant (p < 0.05). Waist circumference decreased in the intensive intervention group more than in the other groups, whereas no significant differences were observed in the other secondary outcome measures.
Education-only intervention is a cost-effective method to promote weight loss. Adding group-based intervention further promotes weight loss.
比较单纯教育干预与基于群体的干预在促进体重减轻方面的效果。
2009 年 4 月至 10 月，在日本水户偕行医院进行了一项为期 6 个月的随机对照试验（UMIN000001259）。参与者为 188 名超重成年人（145 名女性，43 名男性），年龄 40-65 岁。他们被随机分配到三组：对照组、中度干预组和强化干预组。所有三组都接受了一次单一的动机讲座，中度和强化干预组接受了教育材料（教科书、笔记本和计步器），强化干预组还接受了基于群体的支持。体重减轻量是主要的观察指标。次要观察指标是代谢综合征的组成部分。
对照组、中度干预组和强化干预组参与者的平均体重减轻量分别为 2.9 ± 4.1kg、4.7 ± 4.0kg 和 7.7 ± 4.1kg。Bonferroni 事后比较显示所有组间差异均具有统计学意义（p < 0.05）。强化干预组的腰围减少量大于其他组，而其他次要观察指标则没有显著差异。
单纯教育干预是一种促进体重减轻的具有成本效益的方法。增加基于群体的干预进一步促进了体重减轻。
