Impact of sleep, screen time, depression and stress on weight change in the intensive weight loss phase of the LIFE study
Impact of sleep, screen time, depression and stress on weight change in the intensive weight loss phase of the LIFE study
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DOI：
10.1038/ijo.2011.60
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发表时间：
2012-01-01
影响因子：
4.9
通讯作者：
Stevens, V. J.
中科院分区：
文献类型：
--
作者：
Elder, C. R.;Gullion, C. M.;Stevens, V. J.
背景：LIFE研究是一项两阶段随机临床试验，比较了两种方法在指导减肥后维持体重减轻。第一阶段为472名肥胖（体重指数30-50）成年受试者提供了一项为期6个月的非随机强化行为减肥干预。II期是研究的随机体重减轻维持部分。本文着重于第一阶段的措施，睡眠，屏幕时间，抑郁症和stress.Methods：第一阶段的干预包括22个小组会议领导超过26周的行为辅导员。建议包括每天减少500卡路里的饮食摄入量，采用阻止高血压的饮食方法（DASH）饮食模式，每周增加体育锻炼至少180分钟。这里报告的措施是睡眠时间，失眠，屏幕时间，抑郁症和压力在进入和减肥干预后follows.Results：平均体重损失为所有参与者在密集的第一阶段减肥干预为6.3公斤（s.d.）。7.1）。60%（N = 285）的参与者至少减轻了4.5公斤（10磅），并被随机分配到II期。参与者（N = 472）的平均出席率为73.1%（s.d. 26.7），完成5.1（s.d.）1.9)每日食物记录/周，并报告195.1分钟（s.d. 123.1每周运动量使用逻辑回归，睡眠时间（二次趋势，P = 0.030）和较低的压力（P = 0.024）在进入预测成功的减肥计划，和较低的压力预测更大的体重减轻在第一阶段（P = 0.021）。此外，体重减轻与压力（P = 0.048）和抑郁（P = 0.035）的下降显着相关。结论：结果表明，临床医生和研究人员可能会考虑针对睡眠，抑郁和压力作为行为减肥干预的一部分。International Journal of Obesity（2012）36，86-92; doi：10.1038/ijo.2011.60; 2011年3月29日在线发表
Background: The LIFE study is a two-phase randomized clinical trial comparing two approaches to maintaining weight loss following guided weight loss. Phase I provided a nonrandomized intensive 6-month behavioral weight loss intervention to 472 obese (body mass index 30-50) adult participants. Phase II is the randomized weight loss maintenance portion of the study. This paper focuses on Phase I measures of sleep, screen time, depression and stress.Methods: The Phase I intervention consisted of 22 group sessions led over 26 weeks by behavioral counselors. Recommendations included reducing dietary intake by 500 calories per day, adopting the Dietary Approaches to Stop Hypertension (DASH) dietary pattern and increasing physical exercise to at least 180 min per week. Measures reported here are sleep time, insomnia, screen time, depression and stress at entry and post-weight loss intervention follow-up.Results: The mean weight loss for all participants over the intensive Phase I weight loss intervention was 6.3 kg (s.d. 7.1). Sixty percent (N = 285) of participants lost at least 4.5 kg (10 lbs) and were randomized into Phase II. Participants (N = 472) attended a mean of 73.1% (s.d. 26.7) of sessions, completed 5.1 (s.d. 1.9) daily food records/week, and reported 195.1 min (s.d. 123.1) of exercise per week. Using logistic regression, sleep time (quadratic trend, P = 0.030) and lower stress (P = 0.024) at entry predicted success in the weight loss program, and lower stress predicted greater weight loss during Phase I (P = 0.021). In addition, weight loss was significantly correlated with declines in stress (P = 0.048) and depression (P = 0.035).Conclusion: Results suggest that clinicians and investigators might consider targeting sleep, depression and stress as part of a behavioral weight loss intervention. International Journal of Obesity (2012) 36, 86-92; doi:10.1038/ijo.2011.60; published online 29 March 2011