Seasonal variation in food intake, physical activity, and body weight in a predominantly overweight population
Seasonal variation in food intake, physical activity, and body weight in a predominantly overweight population
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DOI：
10.1038/sj.ejcn.1602346
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发表时间：
2006-04-01
影响因子：
4.7
通讯作者：
Ockene, IS
中科院分区：
文献类型：
--
作者：
Ma, Y;Olendzki, BC;Ockene, IS
目的：描述季节性变化的食物摄入量，体力活动，体重在一个主要超重population.Design：纵向观察study.Setting：大多数的研究参与者被招募从健康维护组织（HMO）在中央马萨诸塞州，美国。从HMO人口以外的西班牙裔的额外的个人被招募，以增加该sample.Subjects的种族多样性：数据来自593名参与者，年龄在20 - 70岁，被用于这项调查。每个参与者每季度（五个采样点：基线和连续四个季度）进行为期一年的随访。在每个季度随机选择的几天（包括2个工作日和1个周末）进行体重测量和3次24小时饮食和体力活动回忆。正弦回归模型被用来估计峰谷振幅和相位的peaks.Results：每日热量摄入量高86千卡/天，在秋季相比，春季。来自碳水化合物、脂肪和饱和脂肪的热量百分比显示出轻微的季节性变化，碳水化合物在春季达到峰值，总脂肪和饱和脂肪的摄入量在秋季达到峰值。体力活动水平在冬季最低，春季最高。体重全年变化约1/2公斤，冬季达到高峰（P
Objective: To describe seasonal variation in food intake, physical activity, and body weight in a predominantly overweight population.Design: A longitudinal observational study.Setting: Most of the study participants were recruited from a health maintenance organization (HMO) in central Massachusetts, USA. Additional individuals of Hispanic descent were recruited from outside of the HMO population to increase the ethnic diversity of this sample.Subjects: Data from 593 participants, aged 20 - 70, were used for this investigation. Each participant was followed quarterly ( five sampling points: baseline and four consecutive quarters) for 1-year period. Body weight measurements and three 24-h dietary and physical activity recalls were obtained on randomly selected days ( including 2 weekdays and 1 weekend day) per quarter. Sinusoidal regression models were used to estimate peak-to-trough amplitude and phase of the peaks.Results: Daily caloric intake was higher by 86 kcal/day during the fall compared to the spring. Percentage of calories from carbohydrate, fat and saturated fat showed slight seasonal variation, with a peak in the spring for carbohydrate and in the fall for total fat and saturated fat intake. The lowest physical activity level was observed in the winter and the highest in the spring. Body weight varied by about 1/2 kg throughout the year, with a peak in the winter (P