每日自我称重与不良心理结局：一项随机对照试验。
Daily self-weighing and adverse psychological outcomes: a randomized controlled trial.
机构信息
Department of Nutrition, Gillings School of Global Public Health, Chapel Hill; Department of Health Behavior, Gillings School of Global Public Health, Chapel Hill; Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill; Duke Obesity Prevention Program, Duke Global Health Institute, Duke University, North Carolina.
Department of Nutrition, Gillings School of Global Public Health, Chapel Hill; Department of Health Behavior, Gillings School of Global Public Health, Chapel Hill; Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill; Duke Obesity Prevention Program, Duke Global Health Institute, Duke University, North Carolina.
出版信息
Am J Prev Med. 2014 Jan;46(1):24-9. doi: 10.1016/j.amepre.2013.08.006.
BACKGROUND
Despite evidence that daily self-weighing is an effective strategy for weight control, concerns remain regarding the potential for negative psychological consequences.
PURPOSE
The goal of the study was to examine the impact of a daily self-weighing weight-loss intervention on relevant psychological constructs.
DESIGN
A 6-month RCT.
SETTING/PARTICIPANTS: The study sample (N=91) included overweight men and women in the Chapel Hill NC area.
INTERVENTION
Between February and August 2011, participants were randomly assigned to a daily self-weighing intervention or delayed-intervention control group. The 6-month intervention included daily self-weighing for self-regulation of diet and exercise behaviors using an e-scale that transmitted weights to a study website. Weekly e-mailed lessons and tailored feedback on daily self-weighing adherence and weight-loss progress were provided.
MAIN OUTCOME MEASURES
Self-weighing frequency was measured throughout the study using e-scales. Weight was measured in-clinic at baseline, 3 months, and 6 months. Psychological outcomes were assessed via self-report at the same time points.
RESULTS
In 2012, using linear mixed models and generalized estimating equation models, there were no significant differences between groups in depressive symptoms, anorectic cognitions, disinhibition, susceptibility to hunger, and binge eating. At 6 months, there was a significant group X time interaction for body dissatisfaction (p=0.007) and dietary restraint (p<0.001), with the intervention group reporting lower body dissatisfaction and greater dietary restraint compared to controls.
CONCLUSIONS
Results indicate that a weight-loss intervention that focuses on daily self-weighing does not cause adverse psychological outcomes. This suggests that daily self-weighing is an effective and safe weight-control strategy among overweight adults attempting to lose weight.
TRIAL REGISTRATION
This study is registered at clinicaltrials.gov NCT01369004.
背景
尽管有证据表明每天自我称重是控制体重的有效策略，但人们仍然对潜在的负面心理后果感到担忧。
目的
本研究旨在探讨每日自我称重减肥干预对相关心理结构的影响。
设计
6 个月 RCT。
地点/参与者：研究样本（N=91）包括北卡罗来纳州教堂山地区超重的男性和女性。
干预
2011 年 2 月至 8 月期间，参与者被随机分配到每日自我称重干预组或延迟干预对照组。为期 6 个月的干预包括使用可将体重传输到研究网站的电子秤进行日常自我称重，以自我调节饮食和运动行为。每周通过电子邮件发送课程，并根据每日自我称重的依从性和体重减轻进展提供量身定制的反馈。
主要观察指标
整个研究过程中使用电子秤测量自我称重频率。在基线、3 个月和 6 个月时在诊所测量体重。在相同时间点通过自我报告评估心理结果。
结果
2012 年，使用线性混合模型和广义估计方程模型，两组之间在抑郁症状、厌食认知、抑制力、饥饿易感性和暴食方面没有显著差异。在 6 个月时，身体不满（p=0.007）和饮食控制（p<0.001）方面存在显著的组间时间交互作用，与对照组相比，干预组报告的身体不满程度较低，饮食控制程度较高。
结论
结果表明，专注于每日自我称重的减肥干预不会导致不良的心理结果。这表明，对于超重成年人来说，每日自我称重是一种有效的、安全的控制体重策略，可以帮助他们减肥。
试验注册
本研究在 clinicaltrials.gov 注册，NCT01369004。
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