The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study
The associations between physical activity, screen time and weight from 6 to 14 yrs: The Raine Study
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DOI：
10.1016/j.jsams.2011.03.011
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发表时间：
2011-09-01
影响因子：
4
通讯作者：
Larkin, Dawne
中科院分区：
文献类型：
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作者：
Hands, Beth P.;Chivers, Paola T.;Larkin, Dawne
作为前瞻性纵向队列研究的一部分，在6岁、8岁、10岁和14岁的队列中检查体力活动水平、屏幕使用和BMI之间关系的强度和方向。样本包括1403名男性和女性，他们在2003年至2005年期间参与了14岁的跟踪调查。探索性结构方程模型被用来检验6、8、10和14岁时体力活动水平、BMI和屏幕时间之间的相互关系。6、8年、10年和14年体重指数的预测因子分别解释了1.3%、76.1%、80.1%和73.1%的方差，其中以前的体重指数是最大的预测因子[chi(2)=43.082，df=36，p=194]。屏幕时间的增加预示着8岁和10岁的BMI较高，而体力活动较少，但不是14岁。在14岁时，体力活动可以预测BMI。儿童早期久坐不动的行为模式预示着后来和同时发生的肥胖，而体力活动则预示着青春期的肥胖。儿童和青少年需要不同的干预目标。(C)2011年澳大利亚运动医学。爱思唯尔有限公司出版。保留所有权利。
To examine the strength and direction of the relationship between physical activity level, screen use and BMI in a cohort at ages 6, 8, 10 and 14 yrs as part of a prospective longitudinal cohort study. The sample comprised 1403 males and females who participated in the follow-up survey at 14 yrs of age between 2003 and 2005. Exploratory structural equation modelling was used to examine the interrelationships between physical activity level, BMI and screen time at 6, 8, 10 and 14 yrs. Predictors of BMI at 6, 8, 10 and 14 yrs explained 1.3, 76.1, 80.1 and 73.1 percent of the variances, respectively, with previous BMI the largest predictor [chi(2) =43.082, df = 36, p = 194]. Increased screen time predicted higher BMI and lower physical activity at 8 and 10 yrs but not 14 yrs. At 14 yrs, physical activity predicted BMI. Sedentary patterns of behaviour in early childhood were predictive of later and concurrent obesity, whereas physical activity was predictive of obesity in adolescence. Different intervention targets are required for children and adolescents. (C) 2011 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.