The Relation of Physical Activity, Sedentary Behaviors, and Academic Achievement Is Mediated by Fitness and Bedtime
The Relation of Physical Activity, Sedentary Behaviors, and Academic Achievement Is Mediated by Fitness and Bedtime
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DOI：
10.1123/jpah.2017-0135
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发表时间：
2018-02-01
影响因子：
3.1
通讯作者：
Tammelin, Tuija H.
中科院分区：
文献类型：
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作者：
Syvaoja, Heidi J.;Kankaanpaa, Anna;Tammelin, Tuija H.
背景：本研究调查了主观和客观测量的体力活动（PA）和久坐行为与学业成绩的关联。我们进一步研究了有氧健身、肥胖和就寝时间是否介导了这些关联。方法：这项研究包括来自芬兰 9 所学校的 970 名 9-15 岁儿童（52.3% 是女孩）。 2013 年春季，对基于注册的学业成绩 [平均绩点 (GPA)] 以及自我报告和加速计测量的 PA/久坐行为进行了评估。收集了有氧健身（通过最大往返跑测试评估）、身体成分（通过生物阻抗分析评估）和自我报告的就寝时间。应用结构方程模型来检查关联性。给出了标准化回归系数。结果：自我报告的 PA 直接呈阳性 [β = 0.084； 95% 置信区间 (CI)，0.023 至 0.145] 并通过较高的有氧适能与 GPA 间接呈正相关（β = 0.061；95% CI，0.033 至 -0.087）。基于加速度计的 PA 与 GPA 无关。自我报告的屏幕时间与 GPA 存在间接负相关，包括就寝时间较晚（β = -0.071；95% CI，-0.096 至 -0.035）和有氧适能较低（β = -0.039；95% CI，-0.059 至 0.019）。非屏幕久坐时间与 GPA 呈直接正相关（β = 0.193；95% CI，0.101 至 -0.289），并且通过较低的有氧适能与 GPA 呈间接负相关（β = -0.040；95% CI，-0.063 至 -0.016）。结论：参与 PA、避免过多的屏幕时间和早点睡觉可能有利于学业成绩。
Background: This study investigated the associations of subjectively and objectively measured physical activity (PA) and sedentary behavior with academic achievement. We further examined whether aerobic fitness, obesity, and bedtime mediate these associations. Methods: This study included 970 children aged 9-15 years (52.3% girls) from 9 schools throughout Finland. Register-based academic achievement [grade point average (GPA)] as well as self-reported and accelerometer-measured PA/sedentary behavior were assessed during spring 2013. Aerobic fitness (assessed via a maximal shuttle run test), body composition (assessed via bioimpedance analysis), and self-reported bedtime were collected. Structural equation modeling was applied to examine the associations. Standardized regression coefficients are presented. Results: Self-reported PA had a direct positive [beta = 0.084; 95% confidence interval (CI), 0.023 to 0.145] and an indirect positive association with GPA through higher aerobic fitness (beta = 0.061; 95% CI, 0.033 to -0.087). Accelerometer-based PA was not associated with GPA. Self-reported screen time had an indirect negative association with GPA through later bedtime (beta = -0.071; 95% CI, -0.096 to -0.035) and lower aerobic fitness (beta = -0.039; 95% CI, -0.059 to 0.019). Nonscreen sedentary time had a direct positive (beta = 0.193; 95% CI, 0.101 to -0.289) and an indirect negative association with GPA through lower aerobic fitness (beta = -0.040; 95% CI, -0.063 to -0.016). Conclusions: Participating in PA, avoiding excessive screen time, and going to bed earlier may benefit academic achievement.