Laboratory of InVestigation in Exercise - LIVE, Department of Physical Education, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Presidente Prudente, Brazil.
Department of Physical Education, Federal University of Sergipe, São Cristóvão, Brazil.
Int J Obes (Lond). 2020 Apr;44(4):823-829. doi: 10.1038/s41366-020-0521-y. Epub 2020 Jan 21.
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.
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.
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.
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.
尽管在儿童早期进行身体活动（PA）的益处已得到充分证实，但仍缺乏有力证据表明 PA 及其强度在减轻青少年体重状况与代谢风险之间的关联中的作用。在这项研究中，我们分析了青少年体重状况、PA 强度与代谢风险之间的关联。
使用来自国际儿童加速度计数据库的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）。体重状况根据体重指数进行评估和分类。空腹血糖、甘油三酯、逆高密度脂蛋白胆固醇和血压构成代谢风险指标（z 分数）。PA 通过加速度计进行测量。估计的身高增长高峰期年龄被用作身体成熟的协变量。
我们发现，体重状况的增加与代谢风险呈强正相关。然而，PA 最高三分位（中等到剧烈强度和剧烈强度）的超重或肥胖青少年的代谢风险评分与正常体重组相似。即使在某些剧烈 PA 类别中，中等强度的 PA 似乎也与代谢风险有关。
我们得出结论，PA 可减轻超重或肥胖青少年的代谢风险。虽然这种衰减在很大程度上可以通过剧烈 PA 来解释，但中等强度对改善代谢状况似乎也很重要。
