Contribution of evening macronutrient intake to total caloric intake and body mass index.
Contribution of evening macronutrient intake to total caloric intake and body mass index.
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DOI：
10.1016/j.appet.2012.09.026
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发表时间：
2013-01
期刊：
影响因子：
5.4
通讯作者：
Zee PC
中科院分区：
文献类型：
--
作者：
Baron KG;Reid KJ;Horn LV;Zee PC
这项研究的目的是评估睡眠时间和大量营养素摄入之间的关系，以便更好地理解睡眠和饮食如何影响体重调节。52名志愿者（25名女性）完成了为期7天的手腕活动记录和食物记录。“平均睡眠者”（56%）被定义为睡眠中点<早上5:30，“晚睡者”（44%）被定义为睡眠中点≥早上5:30。数据分析采用t检验、相关性和回归。晚睡者在晚上（定义为晚上8点以后）摄入了更多的蛋白质、脂肪和碳水化合物，但在睡前4小时内摄入的脂肪较少。晚上8点后摄入的总蛋白质、蛋白质、碳水化合物和脂肪、睡眠4小时内摄入的蛋白质以及8点后摄入的脂肪百分比与较高的BMI有关。睡眠4小时内摄入的蛋白质和碳水化合物的数量以及晚上8点后摄入的碳水化合物和脂肪的数量和百分比与更高的总卡路里有关。在控制年龄、性别、睡眠时间和持续时间的多变量分析中，睡前4小时摄入的蛋白质与BMI有关；晚上8点以后摄入的碳水化合物、睡前4小时摄入的蛋白质和碳水化合物与较高的总热量有关。结果表明，晚上摄入的宏量营养素和睡前摄入的量并不相同，尤其是在晚睡者中。在晚上或睡觉前吃东西可能会使人的体重增加，因为总热量更高。
The goal of this study was to evaluate the relationship between sleep timing and macronutrient intake as an approach towards better understanding of how sleep and eating affect weight regulation. Fifty-two volunteers (25 women) completed 7 days of wrist actigraphy and food logs. “Average sleepers” (56%) were defined as having a midpoint of sleep <5:30 am and “late sleepers” (44%) were defined as having a midpoint of sleep ≥ 5:30 am. Data were analyzed using t-tests, correlations and regression. Late sleepers consumed a greater amount of protein fat and carbohydrates in the evening (defined as after 8:00 PM) but less fat in the 4 hours before sleep. Total protein, protein, carbohydrate, and fat consumed after 8:00 PM, protein consumed within 4 hours of sleep as well as the percentage of fat consumed after 8:00 were associated with higher BMI. The amount of protein and carbohydrates consumed within 4 hours of sleep and the amount and percentage of carbohydrate and fat consumed after 8:00 PM were associated with greater total calories. In multivariate analyses controlling for age, gender, sleep timing and duration, protein consumed 4 hours before sleep was associated with BMI; carbohydrates consumed after 8 pm, protein and carbohydrates consumed 4 hours before sleep were associated with higher total calories. Results indicate that evening intake of macronutrients and intake before sleep are not synonymous, particularly among late sleepers. Eating in the evening or before sleep may predispose individuals to weight gain through higher total calories.
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