Goto Ryo, Isa Tsunenori, Kawaharada Rika, Horibe Kana, Tsuboi Yamato, Nakatsuka Kiyomasa, Uchida Kazuaki, Saeki Kenta, Ono Rei
Graduate School of Health Sciences, Kobe University, 7-10-2 Tomogaoka, Suma, Kobe 654-0142, Hyogo, Japan.
National Institutes of Biomedical Innovation, Health and Nutrition, Department of Physical Activity Research, Toyama 1-23-1, Shinjyuku, Tokyo 162-8636, Japan.
Children (Basel). 2022 Sep 20;9(10):1422. doi: 10.3390/children9101422.
This study investigated the effect of different components of screen time (mobile phone use, TV/video viewing, and video gaming) on cardiorespiratory fitness (CRF) development in children aged 9-12 years.
This was a two-year longitudinal study conducted with 175 children (49.7% girls, mean age = 9.5) in Japan. CRF was assessed using a 20 m shuttle run test conducted at baseline and again at follow-up. Children were categorized as "Good" or "Poor" based on the change in CRF scores for each gender. Screen time was assessed using a self-reported questionnaire at baseline and termed as "high" if children reported ≥ 2 h/day. Univariate and multivariate logistic regression analyses were performed after adjusting for gender, physical activity, and time of data collection.
Children scoring "high" on mobile phone use had lower odds of being categorized as "Good" in CRF change (crude odds ratio (OR): 0.34; 95% confidence interval (CI): 0.15-0.90 (adjusted OR: 0.33; 95% CI: 0.12-0.91)). There were no significant effects of TV/video viewing (crude OR: 1.54; 95% CI: 0.84-2.81) and video gaming (crude OR: 0.98; 95% CI: 0.48-1.97) on changes in CRF.
Limiting excessive mobile phone usage might be important for ensuring healthy development of CRF in children.
本研究调查了屏幕时间的不同组成部分（手机使用、电视/视频观看和电子游戏）对9至12岁儿童心肺适能（CRF）发展的影响。
这是一项在日本对175名儿童（49.7%为女孩，平均年龄 = 9.5岁）进行的为期两年的纵向研究。CRF通过在基线和随访时进行的20米往返跑测试进行评估。根据每种性别的CRF分数变化，将儿童分为“良好”或“较差”。在基线时使用自我报告问卷评估屏幕时间，如果儿童报告每天≥2小时，则称为“高”。在对性别、体育活动和数据收集时间进行调整后，进行单变量和多变量逻辑回归分析。
手机使用得分“高”的儿童在CRF变化中被归类为“良好”的几率较低（粗比值比（OR）：0.34；95%置信区间（CI）：0.15 - 0.90（调整后OR：0.33；95%CI：0.12 - 0.91））。电视/视频观看（粗OR：1.54；95%CI：0.84 - 2.81）和电子游戏（粗OR：0.98；95%CI：0.48 - 1.97）对CRF变化没有显著影响。
限制过度使用手机可能对确保儿童CRF的健康发展很重要。
