韩国儿童的娱乐屏幕时间与肥胖风险:一项为期 3 年的前瞻性队列研究。

IF 5.6 1区 医学 Q1 NUTRITION & DIETETICS
Hajin Jang, Yoonkyoung Cho, Hannah Oh
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引用次数: 0

摘要

背景:研究表明,长时间看电视会增加儿童肥胖的风险。然而,很少有研究采用前瞻性队列研究设计来探讨其他类型的屏幕时间(如使用电脑和智能手机)与肥胖的关系。此外,在将屏幕时间重新分配给其他活动时,哪种特定的非屏幕时间活动可能会产生最大的益处也鲜为人知:我们利用 2018 年韩国儿童和青少年小组调查的 3 年随访数据(n = 2,023 人;基线时未肥胖的四年级小学生)进行了前瞻性队列分析。看电视、使用电脑和智能手机以及其他课后活动的平均时间是基线时自我报告的。体重和身高也是在基线调查和直至 2021 年的跟踪调查中自我报告的。我们使用多变量逻辑回归模型估算了屏幕时间与肥胖发生率之间的几率比 (OR) 和 95% 置信区间 (CI),并对潜在的混杂因素进行了调整。我们还建立了等时替代模型,以研究以同等时间交换方式将屏幕时间重新分配给其他非屏幕时间活动(体育活动、睡眠、与朋友出去玩、阅读、学习和与父母聊天)的相关性:结果:综合屏幕时间更长(≥ 240 小时 vs. 240 小时):我们的数据表明,为预防儿童肥胖,应更多地关注减少屏幕时间,增加其他非屏幕时间活动的时间,尤其是阅读时间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Recreational screen time and obesity risk in Korean children: a 3-year prospective cohort study.

Background: Studies have shown that prolonged television watching increases obesity risk among children. However, few studies examined the associations with other types of screen time, such as computer and smartphone use, using a prospective cohort study design. Further, little is known about the specific non-screen time activity that may yield the most benefits when reallocating screen time to other activities.

Methods: We conducted a prospective cohort analysis using 3-year follow-up data from the Korean Children and Youth Panel Survey 2018 (n = 2,023; 4th grade elementary students who were not obese at baseline). Average time spent watching television, using computer and smartphone, and other after-school activities were self-reported at baseline. Weight and height were also self-reported at baseline and follow-up surveys through 2021. We performed multivariable logistic regression models to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for the associations between screen time and obesity incidence, adjusting for potential confounders. We also performed isotemporal substitution models to examine the associations of reallocating screen time to other non-screen time activities (physical activity, sleeping, hanging out with friends, reading, studying, and chatting with parents) in an equal time-exchange manner.

Results: Longer combined screen time (≥ 240 vs. <120 m/d) was statistically significantly associated with an increased obesity risk (OR [95% CI] = 1.68 [1.03, 2.73]). The direction of associations with television watching (≥ 180 vs. <60 m/d: OR [95% CI] = 2.86 [1.58, 5.20]), computer use (≥ 120 vs. <60 m/d: 1.38 [0.52, 3.64]), and smartphone use (≥ 180 vs. <60 m/d: 1.42 [0.76, 2.65]) were all positive, although the association was most apparent and statistically significant for television watching only. The associations did not change after additional adjustment for other lifestyle factors, including physical activity, sleep, and breakfast skipping. In the isotemporal substitution models, reallocating 1-hour of screen time to reading (OR [95% CI] = 0.67 [0.48, 0.93]) was associated with a decreased obesity risk. Reallocating 1-hour of screen time to physical activity was only marginally significantly associated with obesity risk (0.79 [0.62, 1.01]).

Conclusions: Our data suggest that more efforts should focus on reducing screen time and increasing time for other non-screen time activities, particularly reading, for obesity prevention in children.

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来源期刊
CiteScore
13.80
自引率
3.40%
发文量
138
审稿时长
4-8 weeks
期刊介绍: International Journal of Behavioral Nutrition and Physical Activity (IJBNPA) is an open access, peer-reviewed journal offering high quality articles, rapid publication and wide diffusion in the public domain. IJBNPA is devoted to furthering the understanding of the behavioral aspects of diet and physical activity and is unique in its inclusion of multiple levels of analysis, including populations, groups and individuals and its inclusion of epidemiology, and behavioral, theoretical and measurement research areas.
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