Department of Pediatrics, Division of General Pediatrics, University of Minnesota, 717 Delaware St, 3rd floor, Minneapolis, MN 55414, USA.
J Sch Health. 2010 Jan;80(1):31-7. doi: 10.1111/j.1746-1561.2009.00454.x.
Previous studies have found that higher physical activity levels are associated with greater academic achievement among students. However, it remains unclear whether associations are due to the physical activity itself or sports team participation, which may involve requirements for maintaining certain grades, for example. The purpose of this study is to examine the associations between sports team participation, physical activity, and academic outcomes in middle and high school students.
Data were drawn from Project EAT (Eating Among Teens), a survey of middle and high school students (n = 4746). Students self-reported their weekly hours of physical activity, sports team participation, and academic letter grades. Two statistical models were considered: first, 2 separate regression analyses with grade point average (GPA) as the outcome and either sports team participation or physical activity as the predictor; second, a single regression with GPA as the outcome and both sports team participation and physical activity as the simultaneous predictors.
For high school girls, both physical activity and sports team participation were each independently associated with a higher GPA. For high school boys, only sports team participation was independently associated with a higher GPA. For middle school students, the positive association between physical activity and GPA could not be separated from the relationship between sports team participation and a higher GPA.
Regardless of whether academic success was related to the physical activity itself or to participation on sports teams, findings indicated positive associations between physical activity involvement and academic achievement among students.
先前的研究发现，较高的身体活动水平与学生的学业成绩提高有关。然而，目前尚不清楚这些关联是由于身体活动本身还是参与运动队活动所致，因为参与运动队活动可能需要保持一定的成绩等要求。本研究旨在探讨中学生和高中生参与运动队活动、身体活动与学业成绩之间的关联。
数据来自于青少年饮食研究（Eating Among Teens，EAT），这是一项对中学生和高中生的调查（n=4746）。学生自我报告每周的身体活动时间、参与运动队活动的情况以及学业成绩的字母等级。考虑了两种统计模型：首先，使用平均绩点（grade point average，GPA）作为因变量，进行了 2 项独立的回归分析，其中一项预测变量是参与运动队活动，另一项是身体活动；其次，使用 GPA 作为因变量，同时将参与运动队活动和身体活动作为共同的预测变量进行了单一回归分析。
对于高中女生，身体活动和参与运动队活动均与 GPA 升高独立相关。对于高中男生，只有参与运动队活动与 GPA 升高独立相关。对于中学生，身体活动与 GPA 之间的正相关关系不能与参与运动队活动与 GPA 升高之间的关系分开。
无论学业成功是与身体活动本身还是参与运动队有关，研究结果均表明，学生的身体活动参与与学业成绩之间存在正相关关系。
