Ishihara Toru, Morita Noriteru, Nakajima Toshihiro, Yamatsu Koji, Okita Koichi, Sagawa Masato, Kamijo Keita
Graduate School of Human Development and Environment, Kobe University, Kobe, Hyogo, Japan.
Department of Sports Cultural Studies, Hokkaido University of Education, Iwamizawa, Hokkaido, Japan.
NPJ Sci Learn. 2021 Apr 1;6(1):8. doi: 10.1038/s41539-021-00086-8.
Accumulating evidence shows a beneficial association between physical fitness and school children's academic performance. However, several other studies have failed to demonstrate such an association. We reanalyzed data of a two-year longitudinal study of the association between changes in cardiorespiratory fitness and academic performance of school children by focusing on intra-individual variability in grade points as a possible source of this discrepancy. We analyzed data from 469 junior high school students to examine if improvements in cardiorespiratory fitness had a differential effect on an individual student's worst and best grade points. Results indicated that improvements in physical fitness were associated with an improvement in the worst grade points. On the contrary, we did not observe a similar longitudinal association with the best grade points. These findings suggest that improving cardiorespiratory fitness improves the worst grade points of an individual, selectively. We suggest that intra-individual variability in grade points might moderate the association between physical fitness and academic performance changes.
越来越多的证据表明，身体健康与学童的学业成绩之间存在有益的关联。然而，其他一些研究未能证明这种关联。我们重新分析了一项为期两年的纵向研究数据，该研究关注心肺适能变化与学童学业成绩之间的关联，将平均绩点的个体内差异作为这种差异的一个可能来源。我们分析了469名初中生的数据，以检验心肺适能的改善是否对个体学生最差和最好的平均绩点有不同影响。结果表明，体能的改善与最差平均绩点的提高有关。相反，我们没有观察到与最好平均绩点有类似的纵向关联。这些发现表明，改善心肺适能会有选择地提高个体最差的平均绩点。我们认为，平均绩点的个体内差异可能会缓和体能与学业成绩变化之间的关联。
