儿童大量使用数字媒体(heavy digital media use)与青春期后期超重的风险有关。体育活动可以保护儿童在青春期后期免受数字媒体对其体重的不利影响。

一项研究表明，11岁时每周进行6小时的空闲时间体育活动可以降低14岁时因大量使用数字媒体而超重的风险。

Physical activity protects children from the adverse effects of digital media on their weight later in adolescence

https://www.sciencedaily.com/releases/2021/08/210809144112.htm

Elina Engberg, Marja H. Leppänen, Catharina Sarkkola, Heli Viljakainen. Physical Activity Among Preadolescents Modifies the Long-Term Association Between Sedentary Time Spent Using Digital Media and the Increased Risk of Being Overweight. Journal of Physical Activity and Health, 2021; 1 DOI: 10.1123/jpah.2021-0163

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