Kuratsubo Ryota, Kawabata Masashi, Nakamura Emi, Yoshimoto Masumi, Tsunoda Satoshi, Takazawa Yuji, Watanabe Hiroyuki
Department of Rehabilitation, Kitasato Institute Hospital, Kitasato University, Tokyo 108-8642, Japan.
Department of Sports Medicine, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan.
Children (Basel). 2022 Mar 7;9(3):368. doi: 10.3390/children9030368.
This cross-sectional study aimed to clarify the changes in lifestyle and baseball activity before and during the COVID-19 pandemic among youth baseball players. Participants were 99 youth baseball players (ages 9.6 ± 1.5 years, height 137.8 ± 9.4 cm, weight 35.3 ± 12.4 kg) in Japan. They completed an online survey between April 6 and 20, 2021, on their demographic characteristics, lifestyle (recreational screen, sleep, and study times), and baseball activity (frequency of team practice time and voluntary exercise-related baseball) at two-time points: before the pandemic (before March 2020) and during the state of emergency declared in Japan (from April to May 2020). The changes in outcomes between the two-time points were evaluated for significance. Recreational screen time and sleeping time during the state of emergency were significantly increased compared to those before the pandemic (p < 0.001). The frequency of team practice time on weekends during the state of emergency was significantly reduced, and voluntary exercise-related baseball was significantly increased compared to that before the pandemic (p < 0.01). We found that the COVID-19 pandemic changed behaviors concerning activities and exercise among youth baseball players and recommended that such behavioral changes be carefully monitored.
这项横断面研究旨在阐明新冠疫情之前及期间日本青少年棒球运动员的生活方式和棒球活动的变化。研究对象为日本的99名青少年棒球运动员（年龄9.6±1.5岁，身高137.8±9.4厘米，体重35.3±12.4千克）。他们于2021年4月6日至20日完成了一项在线调查，内容涉及他们的人口统计学特征、生活方式（娱乐性屏幕使用时间、睡眠时间和学习时间）以及棒球活动（团队训练时间频率和与自主锻炼相关的棒球活动），调查时间点有两个：疫情之前（2020年3月之前）和日本宣布紧急状态期间（2020年4月至5月）。评估了两个时间点之间结果的变化是否具有显著性。与疫情之前相比，紧急状态期间的娱乐性屏幕使用时间和睡眠时间显著增加（p<0.001）。与疫情之前相比，紧急状态期间周末的团队训练时间频率显著减少，与自主锻炼相关的棒球活动显著增加（p<0.01）。我们发现，新冠疫情改变了青少年棒球运动员在活动和锻炼方面的行为，并建议对此类行为变化进行密切监测。
