Vicente-Rodríguez Germán, Rey-López J Pablo, Martín-Matillas Miguel, Moreno Luis A, Wärnberg Julia, Redondo Carlos, Tercedor Pablo, Delgado Manuel, Marcos Ascensión, Castillo Manuel, Bueno Manuel
School of Health Sciences, University of Zaragoza, Zaragoza, Spain.
Nutrition. 2008 Jul-Aug;24(7-8):654-62. doi: 10.1016/j.nut.2008.03.011. Epub 2008 May 9.
We assessed the individual association of sedentary behaviors with the risk of overweight and excess body fat (overfat) in adolescents.
A representative sample (1960 subjects, 1012 males, age 13-18.5 y) of Spanish adolescents was studied within the framework of the Alimentación y Valoración del Estado Nutricional de los Adolescentes (AVENA) study. Television (TV) watching, videogame and computer usage, doing homework, and the way students got to school, physical activity, and socioeconomic status were analyzed. Anthropometrics were measured to describe overweight (International Obesity Task Force cutoffs for body mass index) and overfat (body fat percentage >85th percentile).
When all subjects were considered as an entire group, the overweight risk increased by 15.8% (P < 0.05) per increasing hour of TV watching. The overweight risks decreased by 32.5% in females, 22% per increasing year of age, and 12.5% by increasing socioeconomic status by 1 U (all Ps < 0.05). The obesity risks decreased with age by 17.8% per year in males and 27.1% in females (both Ps < 0.05). The overfat risks increased by 26.8% and 9.4% per increasing hour of TV and weekend videogame usage, respectively (both Ps < 0.05). In males, the overfat risk increased by 21.5% per increasing hour in weekend videogame usage (P < 0.05). Each hour of TV use increased the overfat risks by 22% in males and 28.3% in females (both Ps < 0.05).
Time spent watching TV increased the risk of overweight and obesity in Spanish adolescents, but the effect was influenced by age, sex, and socioeconomic status. Moreover, an excess of body fat was more directly explained by the time spent watching TV and playing videogames during the weekend.
我们评估了青少年久坐行为与超重及体脂过多（肥胖）风险之间的个体关联。
在“青少年营养状况评估与饮食”（AVENA）研究框架内，对西班牙青少年的一个代表性样本（1960名受试者，1012名男性，年龄13 - 18.5岁）进行了研究。分析了看电视、玩电子游戏和使用电脑的时间、做作业情况、学生上学方式、身体活动以及社会经济地位。测量人体测量指标以描述超重（国际肥胖特别工作组的体重指数临界值）和肥胖（体脂百分比>第85百分位数）情况。
将所有受试者视为一个整体时，每增加一小时看电视时间，超重风险增加15.8%（P < 0.05）。女性超重风险降低32.5%，年龄每增加一岁超重风险降低22%，社会经济地位每增加1个单位超重风险降低12.5%（所有P值均< 0.05）。男性肥胖风险每年降低17.8%，女性降低27.1%（两者P值均< 0.05）。每增加一小时看电视时间和周末玩电子游戏时间，肥胖风险分别增加26.8%和9.4%（两者P值均< 0.05）。在男性中，周末玩电子游戏每增加一小时，肥胖风险增加21.5%（P < 0.05）。男性每使用一小时电视，肥胖风险增加22%，女性增加28.3%（两者P值均< 0.05）。
在西班牙青少年中，看电视时间增加会增加超重和肥胖风险，但这种影响受年龄、性别和社会经济地位的影响。此外，周末看电视和玩电子游戏的时间更能直接解释体脂过多的情况。
