Dept of Nutritional Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
J Phys Act Health. 2011 Sep;8 Suppl 2:S188-97.
The purposes were 1) to determine if different leisure-time sedentary behaviors (LTSB), such as TV/video/video game viewing/playing (TV), reading for pleasure (reading), and nonschool computer usage, were associated with childhood overweight status, and 2) to assess the social-ecological correlates of LTSB.
The analytic sample was 33,117 (16,952 boys and 16,165 girls) participants from the 2003 National Survey of Children's Health. The cut-point for excessive TV and nonschool computer usage was ≥ 2 hr/day. High quantities of daily reading for pleasure were classified as ≥ 31 min/day. Weighted descriptive characteristics were calculated on the sample (means ± SE or frequency). Logistic regression models were used to determine if the LTSB were associated with overweight status and to examine social-ecological correlates.
Over 35% of the sample was overweight. Odds of being overweight were higher in the 2 to 3 hr/day (OR: 1.48, 95% CI: 1.24, 1.76) and ≥ 4 hr/day (OR: 1.52, 95% CI: 1.22, 1.91) daily TV groups compared with none. Reading and nonschool computer usage was not associated with being overweight.
TV was associated with overweight classification; however, nonschool computer usage and reading were not. Several individual, family, and community correlates were associated with high volumes of daily TV viewing.
本研究旨在：1）确定不同的闲暇时间久坐行为（LTSB），如看电视/视频/玩电子游戏（电视）、阅读消遣（阅读）和非学校使用电脑，是否与儿童超重状况相关；2）评估 LTSB 的社会生态学相关性。
分析样本为 2003 年全国儿童健康调查中的 33117 名（男生 16952 名，女生 16165 名）参与者。每天看电视和非学校使用电脑时间超过 2 小时的被定义为过度时间。每天阅读消遣时间超过 31 分钟被定义为高阅读量。使用加权描述性特征对样本进行计算（平均值±SE 或频率）。使用逻辑回归模型来确定 LTSB 是否与超重状况相关，并检查社会生态学相关性。
超过 35%的样本超重。每天看 2 到 3 小时（OR：1.48，95%CI：1.24，1.76）和每天看≥4 小时（OR：1.52，95%CI：1.22，1.91）的参与者超重的可能性高于不看电视的参与者。阅读和非学校使用电脑与超重无关。
看电视与超重分类相关；然而，非学校使用电脑和阅读与超重无关。一些个体、家庭和社区相关因素与每天大量看电视有关。
