VTT Technical Research Centre of Finland, Tampere, Finland.
Obes Facts. 2014;7(1):36-47. doi: 10.1159/000356147. Epub 2014 Jan 31.
BACKGROUND/AIMS: The week's cycle influences sleep, exercise, and eating habits. An accurate description of weekly weight rhythms has not been reported yet - especially across people who lose weight versus those who maintain or gain weight.
The daily weight in 80 adults (BMI 20.0-33.5 kg/m(2); age, 25-62 years) was recorded and analysed to determine if a group-level weekly weight fluctuation exists. This was a retrospective study of 4,657 measurements during 15-330 monitoring days. Semi-parametric regression was used to model the rhythm.
A pattern of daily weight changes was found (p < 0.05), with higher weight early in the week (Sunday and Monday) and decreasing weight during the week. Increases begin on Saturday and decreases begin on Tuesday. This compensation pattern was strongest for those who lost or maintained weight and weakest for those who slowly gained weight.
Weight variations between weekends and weekdays should be considered as normal instead of signs of weight gain. Those who compensate the most are most likely to either lose or maintain weight over time. Long-term habits may make more of a difference than short-term splurges. People prone to weight gain could be counselled about the importance of weekday compensation.
背景/目的：每周的周期会影响睡眠、运动和饮食习惯。目前尚未详细描述每周体重的波动情况，特别是在减肥者、体重维持者和增重者之间。
记录 80 名成年人（BMI 20.0-33.5kg/m²；年龄 25-62 岁）的每日体重，并进行分析，以确定是否存在群体水平的每周体重波动。这是对 15-330 天监测期间的 4657 次测量进行的回顾性研究。采用半参数回归来模拟节律。
发现了每日体重变化的模式（p<0.05），周初（周日和周一）体重较高，周中体重逐渐下降。周六体重开始增加，周二开始下降。这种补偿模式在减肥或体重维持者中最强，在体重缓慢增加者中最弱。
周末和工作日之间的体重变化应视为正常现象，而不是体重增加的迹象。那些补偿最多的人最有可能随着时间的推移减肥或保持体重。长期的习惯可能比短期的放纵更有影响。容易增重的人可能需要接受关于工作日补偿重要性的咨询。
