Hager Ronald L
Department of Exercise Sciences, Brigham Young University, Provo, Utah 84602, USA.
J Adolesc Health. 2006 Nov;39(5):656-61. doi: 10.1016/j.jadohealth.2006.04.020. Epub 2006 Jul 10.
This study examined the relationship between television viewing (TV) and physical activity (PA) in children during the school year.
Participants were 80 children (n = 40 boys) aged 9 to 12 years. A four-day assessment of PA using an accelerometer was conducted, and a daily TV log was maintained. Correlational analyses were made to determine the associations between TV and PA across different days of the week and across different times of the day.
The PA and TV relationship (r = -.086) for all children, while controlling for gender and body mass index (BMI) was not statistically significant. Additional results indicated three significant after-school time periods for PA and TV in boys (r = -.30, p = .03; r = -.37, p = .01; r = -.32, p = .02). Additionally, boys who watched no TV were significantly more active during two time periods immediately after school than boys who watched any TV (p = .006; p = .048, respectively). Similar trends were seen for girls; however, none were significant.
If TV limits PA, it most likely occurs after school. After school, parents and others can provide active play opportunities and limit TV watching. If increased activity is the goal, then limiting TV watching and creating opportunities for activity should be made.
本研究调查了学年期间儿童看电视(TV)与身体活动(PA)之间的关系。
参与者为80名9至12岁的儿童(n = 40名男孩)。使用加速度计对身体活动进行了为期四天的评估,并记录了每日看电视日志。进行相关分析以确定一周中不同日子以及一天中不同时间看电视与身体活动之间的关联。
在控制性别和体重指数(BMI)的情况下,所有儿童的身体活动与看电视之间的关系(r = -0.086)无统计学意义。其他结果表明,男孩在三个放学后时间段内身体活动与看电视之间存在显著关系(r = -0.30,p = 0.03;r = -0.37,p = 0.01;r = -0.32,p = 0.02)。此外,在放学后紧接着的两个时间段内,不看电视的男孩比看电视的男孩明显更活跃(分别为p = 0.006;p = 0.048)。女孩也有类似趋势,但均无统计学意义。
如果看电视会限制身体活动,那么很可能发生在放学后。放学后,家长和其他人可以提供积极玩耍的机会并限制看电视时间。如果目标是增加活动量,那么就应该限制看电视并创造活动机会。