Sisson Susan B, Broyles Stephanie T, Baker Birgitta L, Katzmarzyk Peter T
J Phys Act Health. 2011 Sep;8(s2):S188-S197. doi: 10.1123/jpah.8.s2.s188.
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.
目的如下：1）确定不同的休闲久坐行为（LTSB），如看电视/视频/玩电子游戏（电视）、阅读消遣（阅读）和非学习用途的电脑使用，是否与儿童超重状况相关；2）评估LTSB的社会生态相关因素。
分析样本来自2003年全国儿童健康调查，共33117名参与者（16952名男孩和16165名女孩）。电视和非学习用途电脑使用过量的切点为每天≥2小时。每天大量阅读消遣被分类为每天≥31分钟。计算样本的加权描述性特征（均值±标准误或频率）。使用逻辑回归模型确定LTSB是否与超重状况相关，并检查社会生态相关因素。
超过35%的样本超重。每天看电视2至3小时组（比值比：1.48，95%置信区间：1.24，1.76）和每天看电视≥4小时组（比值比：1.52，95%置信区间：1.22，1.91）超重的几率高于不看电视组。阅读和非学习用途的电脑使用与超重无关。
看电视与超重分类相关；然而，非学习用途的电脑使用和阅读则不然。一些个人、家庭和社区相关因素与每天大量看电视有关。
