School of Psychological Sciences and Health, University of Strathclyde, , Glasgow, UK.
Br J Sports Med. 2014 Feb;48(3):265-70. doi: 10.1136/bjsports-2013-092334. Epub 2013 Oct 22.
To test for cross-sectional (at age 11) and longitudinal associations between objectively measured free-living physical activity (PA) and academic attainment in adolescents.Method Data from 4755 participants (45% male) with valid measurement of PA (total volume and intensity) by accelerometry at age 11 from the Avon Longitudinal Study of Parents and Children (ALSPAC) was examined. Data linkage was performed with nationally administered school assessments in English, Maths and Science at ages 11, 13 and 16.
In unadjusted models, total volume of PA predicted decreased academic attainment. After controlling for total volume of PA, percentage of time spent in moderate-vigorous intensity PA (MVPA) predicted increased performance in English assessments in both sexes, taking into account confounding variables. In Maths at 16 years, percentage of time in MVPA predicted increased performance for males (standardised β=0.11, 95% CI 0.00 to 0.22) and females (β=0.08, 95% CI 0.00 to 0.16). For females the percentage of time spent in MVPA at 11 years predicted increased Science scores at 11 and 16 years (β=0.14 (95% CI 0.03 to 0.25) and 0.14 (0.07 to 0.21), respectively). The correction for regression dilution approximately doubled the standardised β coefficients.
Findings suggest a long-term positive impact of MVPA on academic attainment in adolescence.
在青少年中，通过加速计客观测量的自由生活体力活动（PA）与学业成绩之间的横断面（11 岁时）和纵向关联。
从阿冯纵向父母与子女研究（ALSPAC）中，检查了 4755 名参与者（45%为男性）在 11 岁时通过加速计进行 PA（总量和强度）的有效测量的数据。通过全国性管理的英语、数学和科学学校评估进行了数据链接，评估年龄为 11、13 和 16 岁。
在未调整的模型中，PA 的总量预测学业成绩下降。在控制了 PA 的总量后，中等至剧烈强度 PA（MVPA）的时间百分比预测了男女在英语评估中的表现提高，同时考虑了混杂变量。在 16 岁时的数学中，MVPA 的时间百分比预测了男性（标准化β=0.11，95%CI 0.00 至 0.22）和女性（β=0.08，95%CI 0.00 至 0.16）的表现提高。对于女性，11 岁时 MVPA 的时间百分比预测了 11 岁和 16 岁时科学成绩的提高（β=0.14（95%CI 0.03 至 0.25）和 0.14（0.07 至 0.21））。回归稀释的校正使标准化β系数大约增加了一倍。
研究结果表明，MVPA 对青少年的学业成绩有长期的积极影响。
