TY  - JOUR
PY  - 2019//
TI  - Sleep patterns and sleep deprivation recorded by actigraphy in 4th-grade and 5th-grade students
JO  - Sleep Medicine
A1  - Li, Ao
A1  - Chen, Siteng
A1  - Quan, Stuart F.
A1  - Silva, Graciela E.
A1  - Ackerman, Charlotte
A1  - Powers, Linda S.
A1  - Roveda, Janet M.
A1  - Perfect, Michelle M.
SP  - 191
EP  - 199
VL  - 67
IS  - 
N2  - OBJECTIVE: This study investigates sleep patterns of fourth- and fifth-grade students using actigraphy. <br><br>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. <br><br>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. <br><br>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.<br><br>Copyright © 2019 Elsevier B.V. All rights reserved.<p />  <p>Language: en</p>
LA  - en
SN  - 1389-9457
UR  - http://dx.doi.org/10.1016/j.sleep.2019.12.001
ID  - ref1
ER  -