Timing of evening screen use, rather than the activity itself, negatively impacts youth sleep Current sleep guidelines recommend no screen use in the hour or two before bed. However, the researchers found screen time in the two hours before bed had little impact on youth sleep, it was screen time once in bed that caused problems. screen time is a mainstay in adolescents’ bedtime routines, and sleep guidelines need to be revaluated to better reflect modern life. with the body camera capturing when, what and how they used their screens, a second infrared camera was placed in their bedrooms to capture their screen time while in bed. They also wore an actigraphy, a watch-sized device which measures sleep. participants used screens in the two hours before bed, more than half used screens once in bed, and a third used them after first trying to go to sleep for the night. Every additional 10 minutes of this type of screen time reduced the amount of sleep they got that night by almost the same amount. Our findings suggest that the impact of screen time on sleep is primarily through time displacement delaying sleep onset rather than any direct effects of blue light or interactive engagement as we didn’t find associations with sleep latency and wakefulness during the sleep period 85 adolescents aged 11 to 14 years wear a body camera on their chest from three hours before bed until they got into bed, over the course of one week.
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Saturday, December 7, 2024