Doctors told why the children need to sleep during the day

Медики рассказали, почему детям нужно спать днем

Daytime sleep in children is associated with better learning performance.

Scientists from the University of Pennsylvania (USA) conducted a study which involved little more than three thousand students from China. They followed the relationship between daytime sleep and the baby’s condition, physical and psychological, and noticed that the children, who were asleep in the afternoon, had higher rates. The paper was published in the journal Sleep, reports the Chronicle.info with reference to naked-science.ru.

Although we do not fully understand the need of the body during sleep, there is no doubt that sleep is an important part of life, and even a small lack of sleep can impact negatively on the health of the person. In children, sleep is necessary. American scientists in a large-scale study showed that there is also an Association between daytime sleep and academic performance.

The study was possible thanks to the Chinese program Jintan Child Cohort Study, which since 2004 takes school-age children to monitor various trends on a large social sample. In this study participated 3819 students, but to the end of the experiment reached 2928 children. Their ages ranged from 10 to 12 years. Students were divided into four groups: first the children did not sleep in the afternoon, the second slept from one to two times a week, in the third — from three to four, the fourth five to seven times a week. Sleep duration — from one to one and a half hours. The observations were carried out over two years. It is also worth noting that in China, Napping in elementary and secondary schools — the norm.

To monitor the results, the authors selected a number of indicators. First, they watched how the baby sleeps day and night. Second, the monitored physical indicators such as body mass index (BMI) and glucose level. Thirdly, the researchers interviewed the children using a questionnaire determining the subjective level of happiness. Fourth, teachers provided information about the progress of each student. They then compared the performance of sleep with the rest of the data.

The results showed that daytime sleep was associated with higher levels of happiness, self-control and academic performance. Children who slept three or more times a week, for the second year of the experiment increased the rating 7.6 percent. While significant changes in BMI were not observed.

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Previously, scientists from Imperial College London conducted several experiments with fruit flies (Drosophila melanogaster) and shown that these insects do not require sleep for normal functioning.

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