Department of Teacher Education and Art, Nord University, Levanger, Norway.
Front Public Health. 2022 Apr 27;10:856794. doi: 10.3389/fpubh.2022.856794. eCollection 2022.
The purpose of this study was to examine whether 60 min of physical activity implemented during school hours, would have an impact on 15-year-olds' MVPA (moderate to vigorous physical activity) throughout the school day, and what effect it would have on low-, average-, and high- physically-active students. The intervention study included a sample of every 93 students in the ninth grade from a school in Trøndelag, Norway. Data on the students' physical activity levels during schooltime were measured using accelerometers and analyzed using the Actilife program. A significant higher change in MVPA was found in the intervention group compared to the control group, with an average increase of 25 min in MVPA in the pre-test to 42 min in post-test. Further analyses showed that the that both the low-active and the high-active had a significant increase in MVPA, taking the results of the control group into consideration. However, the low-active participants had the largest increase, with a 123% increase in MVPA during schooltime. The implication of the study is that PA interventions in school have the largest percentage effect among the low-active students in the study, which indicates that school-based interventions can be important in bridging social differences in MVPA among adolescents.
本研究旨在探讨在学校上课期间进行 60 分钟的体育活动，是否会对 15 岁青少年全天的中高强度身体活动（MVPA）产生影响，以及对低、中、高身体活动水平的学生有何影响。这项干预研究的样本包括挪威特隆赫姆一所学校每 93 名九年级学生。学生在学校期间的身体活动水平数据使用加速度计进行测量，并使用 Actilife 程序进行分析。与对照组相比，干预组的 MVPA 变化有显著提高，预测试中 MVPA 平均增加 25 分钟，后测试中增加 42 分钟。进一步的分析表明，考虑到对照组的结果，低活跃组和高活跃组的 MVPA 均有显著增加。然而，低活跃组的参与者增加幅度最大，在校期间的 MVPA 增加了 123%。这项研究的意义在于，学校内的体育活动干预对研究中低活跃组学生的影响最大，这表明基于学校的干预措施对于弥合青少年中 MVPA 的社会差异可能非常重要。
