Device-Measured Sleep Duration Age 9-11 Years Among Urban Korean Children

초록

Objective: Sleep duration measurement methods are expensive and inconvenient. Smart bands or wearable activity trackers have offered objective and continuous tracking over several nights in real-world conditions. This study explored device-measured sleep duration in Korean children aged 9-11 years old. Methods: This cross-sectional study, conducted between October 2022 and March 2023, enrolled 72 participants aged 9-11 years and equipped with smart bands (Xiaomi Mi Smart Band 6) for several nights lasting more than 5 days, including weekends. Sleep duration and sleep onset time were obtained using the smart bands. Results: Seventy-one children (43 girls, 28 boys), with a mean age of 9.92±0.73 were included. Sleep durations on weekdays and weekends did not show a significant difference (8.55±0.66 h vs. 8.76±0.72 h). However, significant difference was observed in sleep onset time between weekdays and weekends (p<0.001). The sleep duration on weekdays and weekends declined with age. The sleep duration on weekdays and weekends was similar in each age group; however, the sleep onset time significantly differed for all age groups (p<0.05). Conclusion: This study suggests insufficient sleep duration among the children in this study. And digital device may be an effective and fast way to evaluate children without a sleep laboratory, and suggest the need for further research to understand their implications and develop more accurate measurement methods for understanding children's sleep. Copyright © 2023 Korean Academy of Sleep Medicine.

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