Background

Although the benefits of physical activity (PA) at an early age are well established, there is no robust evidence of the role of PA as well as its intensities in attenuating the association between weight status and metabolic risk among adolescents. In this investigation, we analyzed the association between weight status, intensities of PA, and metabolic risk among adolescents.

Methods

Data from six cross-sectional studies in the International Children’s Accelerometry Database were used (N = 5216 adolescents; boys 14.6 ± 2.1 years and girls 14.7 ± 2.0 years). Weight status was assessed and classified according to body mass index. Fasting glucose, triglycerides, inverse high-density lipoprotein cholesterol, and blood pressure composed the metabolic risk indicator (z-score). PA was measured by accelerometers. The estimated age of peak height velocity was used as a covariate for somatic maturation.

Results

We observed that increase in weight status showed a strong positive relationship with metabolic risk. However, adolescents with overweight or obesity in the highest tertile of PA (moderate-to-vigorous and vigorous intensity) showed a similar metabolic risk score as the normal weight groups. Moderate intensity PA seemed related to metabolic risk even within some categories of vigorous PA.

Conclusions

We conclude that PA attenuates the metabolic risk of adolescents with overweight or obesity. Although this attenuation is largely explained by vigorous PA, moderate intensity seems also important for better metabolic profile.

中文翻译：

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身体活动可降低超重或肥胖青少年的代谢风险：ICAD 多国研究

背景

尽管早年身体活动 (PA) 的益处已得到充分证实，但没有强有力的证据表明 PA 的作用及其强度在减轻青少年体重状况与代谢风险之间的关联方面的作用。在这项调查中，我们分析了体重状况、体力活动强度和青少年代谢风险之间的关联。

方法

使用了国际儿童加速度计数据库中六项横断面研究的数据（N  = 5216 名青少年；男孩 14.6 ± 2.1 岁，女孩 14.7 ± 2.0 岁）。根据体重指数对体重状况进行评估和分类。空腹血糖、甘油三酯、逆高密度脂蛋白胆固醇和血压构成了代谢风险指标（z 分数）。PA 由加速度计测量。身高速度峰值的估计年龄被用作躯体成熟的协变量。

结果

我们观察到体重状态的增加与代谢风险呈强正相关。然而，在 PA 的最高三分位数（中等到剧烈和剧烈强度）中超重或肥胖的青少年显示出与正常体重组相似的代谢风险评分。中等强度的 PA 似乎与代谢风险相关，即使在某些类别的剧烈 PA 中也是如此。

结论

我们得出结论，PA 可降低超重或肥胖青少年的代谢风险。尽管这种衰减在很大程度上是由剧烈的 PA 解释的，但中等强度似乎对于更好的代谢状况也很重要。