Sustained Effect of Early Physical Activity on Body Fat Mass in Older Children
Sustained Effect of Early Physical Activity on Body Fat Mass in Older Children
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DOI：
10.1016/j.amepre.2009.03.012
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发表时间：
2009-07-01
影响因子：
5.5
通讯作者：
Levy, Steven M.
中科院分区：
文献类型：
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作者：
Janz, Kathleen F.;Kwon, Soyang;Levy, Steven M.
背景：体育活动被认为可以减少儿童的过度肥胖。本研究探讨是否有利于儿童早期中度到剧烈的体力活动（MVPA）对fatness是持续整个childhood.Methods：MVPA分钟，每天（分钟/天）和脂肪质量（公斤，公斤）进行了测量，使用加速度计和双能X射线吸收法在333名儿童年龄在5，8，11岁谁参加了爱荷华州骨发育研究。混合回归模型被用来测试是否MVPA在5岁时有影响的脂肪量在8岁和11岁时，调整后的身高，体重，年龄，成熟度，和MVPA。重复分析以控制5岁时的脂肪量。使用混合模型最小二乘均值，在5岁时MVPA的最高和最低四分位数之间比较8岁和11岁时脂肪量的校正均值。结果：男、女5岁时的MVPA是8岁和11岁时校正脂肪量的预测因子（P
Background: Physical activity is assumed to reduce excessive fatness in children. This Study examined whether the benefits of early childhood moderate-to-vigorous physical activity (MVPA) on fatness are sustained throughout childhood.Methods: MVPA minutes per day (min/d) and fat mass (kilograms; kg) were measured using accelerometry and dual-energy x-ray absorptiometry in 333 children aged 5, 8, and 11 years who were participating in the Iowa Bone Development Study. Mixed regression models were used to test whether MVPA at age 5 years had an effect on fat mass at age 8 years and age 11 years, after adjustment for concurrent height, weight, age, maturity, and MVPA. The analysis was repeated to control for fat mass at age 5 years. Using mixed-model least-squares means, adjusted means of fat mass at age 8 years and age 11 years were compared between the highest and lowest quartiles of MVPA at age 5 years. Data were collected between 1998 and 2006 and analyzed in 2008.Results: For boys and girls, MVPA at age 5 years was a predictor of adjusted fat mass at age 8 years and age 11 years (p