J Nutr Health.  2022 Dec;55(6):656-669. 10.4163/jnh.2022.55.6.656.

Association between sleep duration, sleep quality, time use and dietary quality of high school students in Chungnam

• Shin JE
• Choi MK

• KMID: 2537856
• DOI: http://doi.org/10.4163/jnh.2022.55.6.656

Abstract

Purpose
This study investigates the relationship between sleep duration, sleep quality, time use, and dietary quality of adolescents.
Methods
A cross-sectional study was conducted, enrolling 423 high school students (112 male and 311 female students) in Chungnam using a questionnaire comprising general characteristics, sleep status, use of time, and Nutrition Quotient for Korean Adolescents (NQ-A).
Results
On weekdays, male students reported getting 6.6 hours of sleep, which was significantly higher than the 5.8 hours reported by female students. The sleep quality score between male and female students was not significantly different on weekdays and weekends. Comparing the students categorized as getting 6 hours of sleep duration on weekdays and 8 hours on weekends, a significantly higher total NQ-A score was obtained for the long sleep duration group of female students on weekdays. In male students who reported increased screen time on weekdays and study time on weekends, there was a greater frequency of short sleep duration. Our data also revealed that the longer the sleep duration higher the NQ-A score. In addition, higher NQ-A scores were determined with shorter screen time and more prolonged exercise time.
Conclusion
Our results suggest that intense study time and excessive use of smartphones have a negative effect on sleep in high school students. In addition, poor sleep quality and lack of sleep are likely to affect eating habits and nutritional status. Therefore, there is a need to provide nutritional education to adolescents imparting knowledge that associates desirable sleep habits and the correct use of time.

Keyword

sleep; time; diet; adolescent