J Phys Act Health. 2020 May 1;17(5):525-532. doi: 10.1123/jpah.2019-0320.
School environment provides several intervention opportunities for physical activity. The aim of this study was to examine the relationship between objectively assessed moderate to vigorous physical activity (MVPA) and academic achievement in adolescents.
Cross-sectional data were collected from 301 students aged between 13 and 15 years (46.51% boys), enrolled at 7 secondary schools in the city of Huesca (Spain). Participants wore accelerometers during a 7-day period, and their academic achievement was calculated from the average marks of all subjects. Structural equation modeling and quadratic regression analysis were performed to test both linear and nonlinear explanatory models. One-way analysis of variance was also performed to explore the effect of gender and the percentage of compliance with MVPA recommendations.
MVPA on weekdays and higher levels of body mass index were negatively associated with academic achievement. According to the curvilinear relationship, those students whose MVPA levels were closer to the daily recommendation were more likely to obtain higher academic achievement. However, a significant association was only shown in the case of boys.
Adolescents who satisfy the international recommendations tend to obtain better academic achievement. Therefore, MVPA for adolescents should be prescribed within some beneficial time margins (50-70 min/d).
学校环境为体育活动提供了多种干预机会。本研究旨在探讨青少年中客观评估的中等到剧烈体力活动（MVPA）与学业成绩之间的关系。
从西班牙韦斯卡市的 7 所中学招募了 301 名年龄在 13 至 15 岁之间的学生（46.51%为男生），收集了他们的横断面数据。参与者在 7 天内佩戴加速度计，他们的学业成绩是根据所有科目的平均成绩计算得出的。采用结构方程模型和二次回归分析来检验线性和非线性解释模型。还进行了单因素方差分析，以探讨性别和遵守 MVPA 建议百分比的影响。
平日的 MVPA 和更高的体重指数与学业成绩呈负相关。根据曲线关系，那些接近每日推荐量的 MVPA 水平的学生更有可能获得更高的学业成绩。然而，这种关联仅在男生中显著。
满足国际建议的青少年更有可能获得更好的学业成绩。因此，应该在一些有益的时间范围内（50-70 分钟/天）为青少年规定 MVPA。
