Nakata Yoshio, Sasai Hiroyuki, Tsujimoto Takehiko, Hashimoto Koichi, Kobayashi Hiroyuki
Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan,
Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan.
Obes Facts. 2020;13(2):267-278. doi: 10.1159/000506813. Epub 2020 Apr 14.
Obesity is a public health problem worldwide. To widely disseminate weight-loss interventions across the target population, a cost-effective approach is needed.
We aimed to test whether a single motivational lecture could promote weight loss.
Our study was a 3-month randomized controlled trial, and we recruited participants via local newspaper advertisements in 3 cities in Ibaraki Prefecture, Japan, and randomly assigned them to a control group (no intervention) and an intervention group, who attended a single motivational lecture lasting approximately 2 h. No other lectures or textbooks were provided. The eligibility criteria included an age of 40-64 years, a body mass index (BMI) of 25-40 kg/m2, and the presence of at least 1 component of metabolic syndrome. The primary outcome was body weight change at 3 months.
We enrolled 145 eligible participants with a mean age of 53.8 ± 7.1 years and a BMI of 28.5 ± 3.1 kg/m2. The 3-month body weight change in the control and intervention groups was -0.65 kg (95% confidence interval [CI] -1.09 to -0.20) and -2.48 kg (95% CI -3.01 to -1.95), respectively. The between-group difference was 1.83 kg (95% CI 1.15-2.51).
The significant difference suggested that a single motivational lecture is an effective option to promote modest weight loss in the short term.
肥胖是一个全球性的公共卫生问题。为了在目标人群中广泛传播减肥干预措施，需要一种具有成本效益的方法。
我们旨在测试单次激励讲座是否能促进体重减轻。
我们的研究是一项为期3个月的随机对照试验，通过在日本茨城县3个城市的当地报纸广告招募参与者，并将他们随机分为对照组（无干预）和干预组，干预组参加一次持续约2小时的激励讲座。未提供其他讲座或教材。纳入标准包括年龄40 - 64岁、体重指数（BMI）为25 - 40 kg/m²以及至少存在一种代谢综合征成分。主要结局是3个月时的体重变化。
我们招募了145名符合条件的参与者，平均年龄为53.8 ± 7.1岁，BMI为28.5 ± 3.1 kg/m²。对照组和干预组3个月时的体重变化分别为 -0.65 kg（95%置信区间[CI] -1.09至 -0.20）和 -2.48 kg（95%CI -3.01至 -1.95）。组间差异为1.83 kg（95%CI 1.15 - 2.51）。
显著差异表明，单次激励讲座是短期内促进适度体重减轻的有效选择。
