A longitudinal study on the relationship between lifestyle andbiological rhythm in preschool-aged children

本研究旨在探讨学龄前儿童生活型态与生物节律的关系。2007年至2009年进行了一次纵向调查，结果显示，儿童的就寝和起床时间比现有报道提前了约30分钟。冬季儿童的起床时间明显晚于夏季，调查结果显示，约50%的儿童体温节律稳定。我们发现，就寝时间、起床时间和月龄与体温节律有关。纵向调查显示，短期和长期的生活方式因素在所有时间点对温度节律产生了强烈的影响。

The purpose of this study was to clarify the relationship between lifestyle and biological rhythm in preschool-aged children. We conducted a longitudinal survey from 2007 to 2009.The result of this survey revealed that the children were going to bed and waking up approximately 30 minutes earlier than current reports. Wake-up time was significantly later in winter than in summer.The result of this survey revealed that the temperature rhythm was stable in approximately 50% of the children. We found that bedtime, wake-up time, and age in months were associated with temperature rhythm. The longitudinal survey revealed that both short- and long-term lifestyle factors exerted a strong influence on temperature rhythm at all time point.