American journal of preventive medicine
-
Insufficient sleep among adolescents is common and has adverse health and behavior consequences. Understanding associations of physical activity and sedentary behaviors with sleep duration could shed light on ways to promote sufficient sleep. ⋯ Daily physical activity for ≥60 minutes and limited computer use are associated with sufficient sleep among adolescents.
-
Randomized Controlled Trial
A cluster randomized trial of sun protection at elementary schools. Results from year 2.
Elementary schools are one potential venue for sun protection interventions that reduce childhood sun exposure. ⋯ This intervention increased use of hats at school through Year 2 but had no measurable effect on skin pigmentation or nevi. Whether school-based interventions can ultimately prevent skin cancer is uncertain.