Screen and nonscreen sedentary behavior and sleep in adolescents.

Area of Science:

• Adolescent Health
• Sleep Science
• Behavioral Science

Background:

• Sedentary behaviors, including screen time, are prevalent among adolescents.
• Understanding the impact of different sedentary activities on sleep is crucial for public health.

Purpose of the Study:

• To investigate the associations between various types of sedentary time (screen and nonscreen) and sleep outcomes in adolescents.
• To examine the relationship between screen time, sleep duration, and daytime sleepiness.

Main Methods:

• Cross-sectional analysis of data from 1233 adolescents (aged 14-16 years) from the AdoQuest study.
• Data collected on screen time (computer, videogame, TV), nonscreen sedentary time (phone calls, homework, reading), sleep duration, and daytime sleepiness.

Main Results:

• Increased computer and videogame use (>2 hours/day) correlated with reduced sleep duration.
• Computer use and talking on the phone were associated with short sleep duration (<8 hours/night) and higher daytime sleepiness.
• Television viewing was found to be protective against short sleep.

Conclusions:

• Sedentary screen behaviors, specifically computer use and phone calls, are linked to insufficient sleep and daytime sleepiness in adolescents.
• Parents, clinicians, and adolescents should be aware of the negative impact of sedentary screen time on sleep.
• Reducing sedentary screen time may be a strategy to improve adolescent sleep duration and reduce daytime sleepiness.