GENUD (Growth, Exercise, Nutrition and Development) Research Group, Zaragoza, Spain.
Prev Med. 2010 Jul;51(1):50-5. doi: 10.1016/j.ypmed.2010.03.013. Epub 2010 Mar 30.
To describe sedentary behaviors in adolescents and to examine the influence of media availability on TV viewing.
The study assessed 3278 adolescents (1537 males and 1741 females, 12.5-17.5 years) involved in the HELENA study (2007). Adolescents reported hours of TV viewing, computer games, console, internet for study and non-study reasons, and study, as well as availability of TVs, computers and consoles.
Time spent in sedentary behaviors was higher during weekends (all p<0.001). Males spent more hours on TV viewing (for > or = 15 years at weekends), playing computer games and console games while females spent more time studying and surfing for non-study reasons. During weekdays, one third of adolescents exceeded the screen time guidelines (>2h/day) based solely on TV viewing, whereas around 60% exceeded it at weekends. Having a TV or a console in the bedroom was associated with higher TV viewing (OR=2.66; 95% CI 2.23-3.18; and OR=1.92; 95% CI 1.61-2.28, respectively) whereas the presence of computer reduced it (OR=0.57; 95% CI 0.48-0.68).
Adolescents living in Europe are not meeting media recommendations, especially during weekend. The absence of a TV in the adolescents' bedroom might reduce TV viewing. Further studies are needed to confirm or contrast our findings.
描述青少年的久坐行为，并探讨媒体可用性对电视观看的影响。
本研究评估了参与 HELENA 研究（2007 年）的 3278 名青少年（1537 名男性和 1741 名女性，12.5-17.5 岁）。青少年报告了看电视、玩电脑游戏、玩游戏机、上网学习和非学习目的以及学习的时间，以及电视、电脑和游戏机的可用性。
周末的久坐时间更高（所有 p<0.001）。男性在周末观看电视、玩电脑游戏和玩游戏机的时间更多，而女性在学习和上网非学习目的方面花费的时间更多。在工作日，仅基于看电视，三分之一的青少年超过了屏幕时间指南（>2 小时/天），而在周末则有近 60%的青少年超过了该指南。卧室里有电视或游戏机与更高的电视观看时间相关（OR=2.66；95%CI 2.23-3.18；和 OR=1.92；95%CI 1.61-2.28），而电脑的存在则降低了它（OR=0.57；95%CI 0.48-0.68）。
居住在欧洲的青少年不符合媒体的建议，尤其是在周末。青少年卧室里没有电视可能会减少看电视的时间。需要进一步的研究来证实或反驳我们的发现。
