Cristi-Montero Carlos, Chillón Palma, Labayen Idoia, Casajus José A, Gonzalez-Gross Marcela, Vanhelst Jérémy, Manios Yannis, Moreno Luis A, Ortega Francisco B, Ruiz Jonatan R
IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso 2340000, Chile.
PROmoting FITness and Health through physical activity research group (PROFITH), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada 18001, Spain.
J Sport Health Sci. 2019 Jan;8(1):55-62. doi: 10.1016/j.jshs.2018.03.004. Epub 2018 Mar 27.
This study aims to compare adolescents' cardiometabolic risk score through an integrative classification of physical activity (PA), which involves the combination of moderate-to-vigorous physical activity (MVPA) and sedentary behavior (SB).
A cross-sectional study derived from the Healthy Lifestyle in Europe by Nutrition in Adolescence Cross-Sectional Study database (2006-2008) was conducted in adolescents ( = 548; boys, 47.3%; 14.7 ± 1.2 years) from 10 European cities. MVPA and SB were objectively measured using accelerometry. Adolescents were divided into 4 categories according to MVPA (meeting or not meeting the international recommendations) and the median of SB time (above or below sex- and age-specific median) as follows: High-SB & Inactive, Low-SB & Inactive, High-SB & Active, and Low-SB & Active. A clustered cardiometabolic risk score was computed using the homeostatic model assessment, systolic blood pressure, triglycerides, total cholesterol/high-density lipoprotein cholesterol, sum 4 skinfolds, and cardiorespiratory fitness (CRF). Analyses of covariance were performed to discern differences on cardiometabolic risk scores among PA categories and each health component.
The cardiometabolic risk score was lower in adolescents meeting the MVPA recommendation and with less time spent in SB in comparison to the high-SB & Inactive group ( < 0.05). However, no difference in cardiometabolic risk score was established between High-SB or Low-SB groups in inactive adolescents. It is important to note that CRF was the only variable that showed a significant modification (higher) when children were compared from the category of physically inactive with "active" but not from high- to low-SB.
Being physically active is the most significant and protective outcome in adolescents to reduce cardiometabolic risk. Lower SB does not exhibit a significant and extra beneficial difference.
本研究旨在通过对身体活动（PA）进行综合分类来比较青少年的心血管代谢风险评分，该分类涉及中度至剧烈身体活动（MVPA）和久坐行为（SB）的结合。
一项横断面研究来自欧洲青少年营养健康生活方式横断面研究数据库（2006 - 2008年），对来自10个欧洲城市的青少年（n = 548；男孩占47.3%；14.7 ± 1.2岁）进行。使用加速度计客观测量MVPA和SB。青少年根据MVPA（是否符合国际建议）和SB时间中位数（高于或低于性别和年龄特异性中位数）分为4类，如下：高SB且不活跃、低SB且不活跃、高SB且活跃、低SB且活跃。使用稳态模型评估、收缩压、甘油三酯、总胆固醇/高密度脂蛋白胆固醇、4处皮褶厚度总和以及心肺适能（CRF）计算聚类心血管代谢风险评分。进行协方差分析以辨别PA类别和每个健康成分之间心血管代谢风险评分的差异。
与高SB且不活跃组相比，符合MVPA建议且SB时间较少的青少年心血管代谢风险评分较低（P < 0.05）。然而，不活跃青少年中高SB组和低SB组之间的心血管代谢风险评分没有差异。需要注意的是，当从不活跃类别与“活跃”类别比较儿童时，CRF是唯一显示出显著变化（更高）的变量，而从高SB到低SB则没有。
身体活跃是青少年降低心血管代谢风险最显著的保护因素。较低的SB未显示出显著的额外有益差异。
