Sleep, physical activity, and screen-time behaviors among adolescents are risk factors for physical health (eg, obesity), mental and emotional health, behavioral outcomes (eg, tobacco use), and performance-based outcomes (eg, academic achievement).1-3 Accordingly, it is recommended that children (age 6-12 years) sleep 9 to 12 hours and adolescents (age 14-18 years) sleep 8 to 10 hours a night and that both groups accumulate at least 1 hour of moderate-intensity or vigorous-intensity aerobic physical activity and limit screen time (ie, exposure to all screen-based digital media) to less than 2 hours within a 24-hour period.3,4 Meeting recommendations for all 3 behaviors may have a greater association with health outcomes than meeting any 1 recommendation in isolation. However, the prevalence and likelihood of US adolescents meeting these recommendations in combination across various sociodemographic factors is unknown.
Knell G, Durand CP, Kohl HW, Wu IHC, Pettee Gabriel K. Prevalence and Likelihood of Meeting Sleep, Physical Activity, and Screen-Time Guidelines Among US Youth. JAMA Pediatr. Published online February 04, 2019. doi:10.1001/jamapediatrics.2018.4847
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