追踪研究：一项行为减肥计划中体重追踪频率变化的随机对照试验描述。
The Tracking Study: description of a randomized controlled trial of variations on weight tracking frequency in a behavioral weight loss program.
作者信息
Linde Jennifer A, Jeffery Robert W, Crow Scott J, Brelje Kerrin L, Pacanowski Carly R, Gavin Kara L, Smolenski Derek J
机构信息
Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, 1300S. 2nd St, Suite 300, Minneapolis, MN 55454, USA.
Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, 1300S. 2nd St, Suite 300, Minneapolis, MN 55454, USA.
出版信息
Contemp Clin Trials. 2015 Jan;40:199-211. doi: 10.1016/j.cct.2014.12.007. Epub 2014 Dec 19.
BACKGROUND
Observational evidence from behavioral weight control trials and community studies suggests that greater frequency of weighing oneself, or tracking weight, is associated with better weight outcomes. Conversely, it has also been suggested that frequent weight tracking may have a negative impact on mental health and outcomes during weight loss, but there are minimal experimental data that address this concern in the context of an active weight loss program. To achieve the long-term goal of strengthening behavioral weight loss programs, the purpose of this randomized controlled trial (the Tracking Study) is to test variations on frequency of self-weighing during a behavioral weight loss program, and to examine psychosocial and mental health correlates of weight tracking and weight loss outcomes. This paper describes the study design, intervention features, recruitment, and baseline characteristics of participants enrolled in the Tracking Study.
METHODS/DESIGN: Three hundred thirty-nine overweight and obese adults were recruited and randomized to one of three variations on weight tracking frequency during a 12-month weight loss program with a 12-month follow-up: daily weight tracking, weekly weight tracking, or no weight tracking. The primary outcome is weight in kilograms at 24 months. The weight loss program integrates each weight tracking instruction with standard behavioral weight loss techniques (goal setting, self-monitoring, stimulus control, dietary and physical activity enhancements, lifestyle modifications); participants in weight tracking conditions were provided with wireless Internet technology (wi-fi-enabled digital scales and touchscreen personal devices) to facilitate weight tracking during the study.
CONCLUSION
This study was successful in recruiting adult male and female participants and is positioned to enhance the standard of care with regard to weight tracking recommendations.
背景
行为体重控制试验和社区研究的观察证据表明，更频繁地称体重或记录体重与更好的体重结果相关。相反，也有人提出，频繁记录体重可能会对减肥期间的心理健康和结果产生负面影响，但在积极的减肥计划背景下，解决这一问题的实验数据很少。为了实现加强行为减肥计划的长期目标，这项随机对照试验（追踪研究）的目的是测试行为减肥计划期间自我称重频率的变化，并研究体重记录与减肥结果的心理社会和心理健康相关性。本文描述了追踪研究中参与者的研究设计、干预特点、招募情况和基线特征。
方法/设计：招募了339名超重和肥胖成年人，并将他们随机分配到为期12个月的减肥计划及12个月随访期间体重记录频率的三种变化之一：每日记录体重、每周记录体重或不记录体重。主要结局是24个月时的体重（千克）。减肥计划将每个体重记录指导与标准行为减肥技术（目标设定、自我监测、刺激控制、饮食和身体活动改善、生活方式改变）相结合；体重记录组的参与者被提供无线互联网技术（支持wi-fi的数字秤和触摸屏个人设备），以方便在研究期间记录体重。
结论
这项研究成功招募了成年男性和女性参与者，有望提高体重记录建议方面的护理标准。
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