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Gyeongmin Kim 1 Article
Associations between digital media use and lack of physical exercise among middle-school adolescents in Korea
Gyeongmin Kim, Hyunsuk Jeong, Hyeon Woo Yim
Epidemiol Health. 2022;e2023012.   Published online January 10, 2023
DOI: https://doi.org/10.4178/epih.e2023012    [Accepted]
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Abstract
Objectives
The reported effects of digital media overuse on physical activity among adolescents are inconsistent. This study examined the association between hours of digital media use and lack of moderate-intensity physical exercise according to the type of digital media.
Methods
This study included 1,837 middle school students from the iCURE study conducted in Korea. Hours spent using digital media were measured by self-reported daily usage time for internet games, messengers, social media, and watching game streaming on weekdays. Lack of moderate-intensity physical exercise was defined as performing a minimum of 30 minutes at a time less than twice weekly. Multivariate logistic regression analysis stratified by gender was performed.
Results
Among male students, the group with the highest hours of using either internet games or watching game streaming was more likely to lack moderate-intensity physical exercise than each non-user group. In contrast, among male students, the group using either messengers or social media had a higher rate of moderate-intensity physical exercise compared to each non-user group. Female students showed no association between hours spent using Internet games, messengers, social media, or watching game streaming and a lack of moderate-intensity physical exercise.
Conclusions
Among male middle school students in Korea, the excessive use of Internet games or watching game streaming was associated with a lack of moderate-intensity physical exercise. Thus, guidelines should be established regarding adolescent use of internet games and watching game streaming.
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Korean summary
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Epidemiol Health : Epidemiology and Health