Correlation between physical activity and sedentary behavior with healthy and unhealthy behaviors in Italy and Tuscan region: a cross sectional study.

Among teenagers, increased use of screen based media is associated with negative health behaviors such as physical activity but also associated with a decreased use of tobacco. 

Comment: Use of screen based media generally involves sitting down or lying down. The use of the screen based media likely represents a surrogate marker for physical inactivity.

J Prev Med Hyg. 2013 Mar;54(1):41-8