The University Sleep Disorders Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
Appetite. 2010 Apr;54(2):426-9. doi: 10.1016/j.appet.2010.01.011. Epub 2010 Jan 25.
We hypothesize that factors other than a sudden shift in eating habits contribute to delay of circadian rhythms during Ramadan. We assessed circadian changes during a baseline period (BL, 1 week before Ramadan), the first week (R1), and the second week (R2), of Ramadan, in six healthy Muslim young adults using portable armband physiological and activity sensor devices. All participants lived in an unconstrained environment and showed delayed sleep phase syndrome, so that they normally slept during the day and ate at night. During Ramadan, there was a further delay in the acrophase of skin temperature during Ramadan, indicating a shift in the circadian pattern of body temperature. Additionally, there was a delay in the peak of energy expenditure during R1 and R2. These results support our hypothesis that in addition to sudden shift in meal times, other factors may affect the sleep pattern and circadian rhythms during Ramadan.
我们假设，除了饮食习惯的突然改变之外，还有其他因素导致斋月期间昼夜节律的延迟。我们使用便携式臂带生理和活动传感器设备，在斋月前一周的基线期 (BL)、第一周 (R1) 和第二周 (R2) 期间，对六名健康的穆斯林年轻人的昼夜节律变化进行了评估。所有参与者都生活在不受限制的环境中，表现出睡眠相位延迟综合征，因此他们通常在白天睡觉，晚上进食。在斋月期间，皮肤温度的峰值相位进一步延迟，表明体温的昼夜节律模式发生了变化。此外，在 R1 和 R2 期间，能量消耗的峰值也出现了延迟。这些结果支持我们的假设，即除了用餐时间的突然改变之外，其他因素可能会影响斋月期间的睡眠模式和昼夜节律。
