OBJECTIVE This study investigates sleep patterns of fourth- and fifth-grade students using actigraphy. METHODS The study included 257 students enrolled in a Southwestern US school district who participated in a novel sleep science curriculum during the Spring 2016-17 and Fall 2017-18 semesters and met the study inclusion criteria. As part of this curriculum, participants underwent 5-7 days of continuous wrist actigraphy and completed an online sleep diary. RESULTS Approximately two-thirds of the 9-11-year-old fourth- and fifth-grade students slept less than the minimum 9 h per night recommended by both the American Academy of Sleep Medicine/Sleep Research Society and the National Sleep Foundation. The sleep midpoint time on weekends was about 1 h later than on weekdays. There was a significant effect of age on sleep duration. Compared to 9-year old students, a larger proportion of 10-year old students had a sleep duration less than 8.5 h. Boys had shorter sleep duration than girls, and a larger percentage of boys obtained less than 9 h of sleep compared to girls. CONCLUSIONS Insufficient sleep is a highly prevalent condition among 9-11-year-old fourth- and fifth-grade elementary students. Importantly, there is a difference between sleep patterns on weekdays and weekends which may portend greater problems with sleep in adolescence and young adulthood.

中文翻译：

---

书法记录的4年级和5年级学生的睡眠方式和睡眠剥夺。

目的本研究利用书法来研究四年级和五年级学生的睡眠方式。方法该研究包括257名在美国西南学区就读的学生，他们在2016-17春季和2017-18秋季学期参加了新颖的睡眠科学课程，并符合纳入标准。作为该课程的一部分，参与者进行了5-7天的连续腕部书法练习，并完成了在线睡眠日记。结果9-11岁的四年级和五年级学生中，大约有三分之二的睡眠时间少于美国睡眠医学研究院/睡眠研究协会和国家睡眠基金会建议的每晚至少9小时的睡眠时间。周末的睡眠中点时间比工作日晚约1小时。年龄对睡眠时间有显着影响。与9岁的学生相比，10岁的学生睡眠时间少于8.5小时的比例更大。男孩的睡眠时间比女孩短，男孩的睡眠时间少于女孩的时间少于9小时。结论在9-11岁的四年级和五年级小学学生中，睡眠不足是一种高度普遍的状况。重要的是，工作日和周末的睡眠方式有所不同，这可能预示着青春期和成年后的睡眠问题会更大。结论在9-11岁的四年级和五年级小学学生中，睡眠不足是一种高度普遍的状况。重要的是，工作日和周末的睡眠方式有所不同，这可能预示着青春期和成年后的睡眠问题会更大。结论在9-11岁的四年级和五年级小学学生中，睡眠不足是一种高度普遍的状况。重要的是，工作日和周末的睡眠方式有所不同，这可能预示着青春期和成年期睡眠的更大问题。