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首页> 外文期刊>BMC Pediatrics >Physical activity and fat mass gain in Mexican school-age children: a cohort study
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Physical activity and fat mass gain in Mexican school-age children: a cohort study

机译：一项队列研究：墨西哥学龄儿童的体育锻炼和体重增加

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Background In México, the prevalence of unhealthy weight increased from 24% at 6 y to 33% at 12 y of age, opening a window of opportunity to better understand the pathogenesis of obesity. The objective of this study was to explore the association between time spent on medium, vigorous physical activity (MVPA) and concurrent gains in BMI, fat mass (FM) and fat-free mass (FFM), alternately, in a cohort of Mexican children followed from kindergarten (baseline) to 2nd grade elementary school (endline). Methods The MVPA (5-d accelerometry), BMI, FM and FFM (air displacement plethysmography) were measured at baseline and endline. Associations between gains in BMI, FM and FFM and changes in MVPA were examined using lagged and dynamic regression models, controlling for energy intake and demographic variables. Results A total of 205 children were analyzed. Gender affected the effect of MVPA on FM gain. In girls, a high baseline MVPA predicted a lower FM gain (-0.96 kg, p=0.025) compared to low/medium MVPA. Increasing, decreasing or having a persistently high MVPA predicted a lower FM gain (range -1.6 to -1.03 kg, p Conclusion These results support a protective role of MVPA on FM gain in girls, suggesting that it may play a crucial role in the development of obesity. Further research on the gender effect of MVPA is warranted to better understand its role in the prevention and control of overweight and obesity.
机译：背景在墨西哥，不健康体重的患病率从6岁时的24％增加到12岁时的33％，这为更好地了解肥胖症的发病机理打开了机会之窗。这项研究的目的是探究一组墨西哥儿童在中等强度的体育活动（MVPA）上花费的时间与BMI，脂肪量（FM）和无脂肪量（FFM）的同时增加之间的关系。从幼儿园（基线）到二年级小学（终点）。方法在基线和终点测量MVPA（5-d加速度计），BMI，FM和FFM（空气体积体积描记法）。使用滞后和动态回归模型（控制能量摄入和人口统计学变量），检查了BMI，FM和FFM增益与MVPA变化之间的关联。结果共对205名儿童进行了分析。性别影响了MVPA对FM增益的影响。在女孩中，与低/中MVPA相比，高基线MVPA预测较低的FM增益（-0.96 kg，p = 0.025）。 MVPA的增加，减少或持续偏高预示着FM增益降低（范围-1.6至-1.03 kg，p）结论这些结果支持MVPA对女孩的FM增益的保护作用，表明它可能在发育中起关键作用。有必要进一步研究MVPA的性别效应，以更好地了解其在预防和控制超重和肥胖中的作用。

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