Department of Psychiatry and Human Behavior, Weight Control and Diabetes Research Center, Brown Medical School and the Miriam Hospital, Providence, Rhode Island 02903, USA.
Am J Prev Med. 2010 Jul;39(1):63-8. doi: 10.1016/j.amepre.2010.03.011. Epub 2010 May 26.
Weight gain in young adults is an important public health problem and few interventions have been successful.
This pilot study evaluated the preliminary efficacy of two self-regulation approaches to weight-gain prevention: Small Changes (changes in energy balance of roughly 200 kcal/day) and Large Changes (initial weight loss of 5-10 lbs to buffer against future weight gains).
Participants were enrolled in 8-week programs teaching Small or Large Changes (SC; LC). Both approaches were presented in a self-regulation framework, emphasizing daily self-weighing.
Randomized controlled pilot study.
SETTING/PARTICIPANTS: Young adults (N=52) aged 18-35 years (25.6+/-4.7 years, BMI of 26.7+/-2.4 kg/m(2)) were recruited in Providence RI and Chapel Hill NC.
Adherence to intervention, weight change, and satisfaction/confidence in approach assessed at 0, 8, and 16 weeks. Data were collected in 2008 and analyzed in 2008-2009.
Participants attended 84% of sessions, and 86.5% and 84.5% of participants completed post-treatment and follow-up assessments, respectively. Participants adhered to their prescriptions. Daily weighing increased markedly in both groups, whereas the eating and exercise changes observed in the SC and LC reflected the specific approach taught. Weight changes were significantly different between groups at 8 weeks (SC= -0.68+/-1.5 kg, LC= -3.2+/-2.5 kg, p<0.001) and 16 weeks (SC= -1.5+/-1.8 kg, LC= -3.5+/-3.1 kg, p=0.006). Participants in both groups reported high levels of satisfaction and confidence in the efficacy of the approach they were taught.
Both Small and Large Change approaches hold promise for weight-gain prevention in young adults; a fully powered trial comparing the long-term efficacy of these approaches is warranted.
本研究旨在评估两种自我调节方法预防体重增加的初步效果：小变化（每天能量平衡改变约 200 千卡）和大变化（初始体重减轻 5-10 磅以缓冲未来体重增加）。
参与者被纳入 8 周的小变化或大变化（SC；LC）课程。两种方法均以自我调节框架呈现，强调每天自我称重。
随机对照试验。
地点/参与者：18-35 岁（25.6+/-4.7 岁，BMI 为 26.7+/-2.4kg/m(2))的年轻人在普罗维登斯 RI 和教堂山 NC 招募。
0、8 和 16 周时评估干预依从性、体重变化和对方法的满意度/信心。数据于 2008 年收集并于 2008-2009 年进行分析。
参与者参加了 84%的课程，86.5%和 84.5%的参与者分别完成了治疗后和随访评估。参与者遵守了他们的处方。两组的日常称重都显著增加，而 SC 和 LC 中观察到的饮食和运动变化反映了所教授的具体方法。8 周时两组体重变化差异有统计学意义（SC=-0.68+/-1.5kg，LC=-3.2+/-2.5kg，p<0.001），16 周时差异仍有统计学意义（SC=-1.5+/-1.8kg，LC=-3.5+/-3.1kg，p=0.006）。两组参与者均报告对所教授方法的有效性高度满意和有信心。
小变化和大变化方法都有望预防年轻人体重增加；需要进行一项比较这些方法长期效果的完全随机试验。
