Abstract：
UNASSIGNED: Lack of physical activity has a critical effect on the physical and mental health of adolescents. This study examined the influence of family adversities on the longitudinal changes in physical inactivity among adolescents during the coronavirus disease 2019 (COVID-19) pandemic.
UNASSIGNED: The study used multi-wave data from the Korean Children and Youth Panel Survey, including 2590 Korean adolescents aged 12-14 years. The longitudinal trajectory of physical inactivity among adolescents and the effects of related factors were estimated using a latent growth modeling method.
UNASSIGNED: Our results revealed a significant increase in physical inactivity among adolescents over time. At the onset of the pandemic, approximately one-seventh of Korean middle schoolers reported a lack of physical activity. However, 3 years later, during the quarantine, nearly one-fifth of these adolescents reported a significant increase in their physical inactivity. Initially, low level parental education was predictive of adolescents\' physical inactivity, but this effect diminished over time, becoming statistically insignificant by the end of the 3-year period. Moreover, the increase in physical inactivity over the 3 years was significantly influenced by parental rejection.
UNASSIGNED: These findings suggest that adolescents who experience parental rejection are more likely to report an increase in sedentary behaviors in contexts such as the COVID-19 pandemic.
UNASSIGNED: The study used multi-wave data from the Korean Children and Youth Panel Survey, including 2590 Korean adolescents aged 12-14 years. The longitudinal trajectory of physical inactivity among adolescents and the effects of related factors were estimated using a latent growth modeling method.
UNASSIGNED: Our results revealed a significant increase in physical inactivity among adolescents over time. At the onset of the pandemic, approximately one-seventh of Korean middle schoolers reported a lack of physical activity. However, 3 years later, during the quarantine, nearly one-fifth of these adolescents reported a significant increase in their physical inactivity. Initially, low level parental education was predictive of adolescents\' physical inactivity, but this effect diminished over time, becoming statistically insignificant by the end of the 3-year period. Moreover, the increase in physical inactivity over the 3 years was significantly influenced by parental rejection.
UNASSIGNED: These findings suggest that adolescents who experience parental rejection are more likely to report an increase in sedentary behaviors in contexts such as the COVID-19 pandemic.
摘要：
■缺乏体育锻炼对青少年的身心健康有至关重要的影响。这项研究调查了家庭逆境对2019年冠状病毒病(COVID-19)大流行期间青少年身体不活动纵向变化的影响。
■该研究使用了韩国儿童和青年小组调查的多波数据，包括2590名12-14岁的韩国青少年。使用潜在生长建模方法估算了青少年身体不活动的纵向轨迹以及相关因素的影响。
■我们的研究结果表明，随着时间的推移，青少年缺乏体力活动的现象显著增加。大流行开始时，大约七分之一的韩国中学生报告缺乏体育锻炼。然而,三年后,在隔离期间,近五分之一的青少年报告说，他们缺乏体力活动的情况显著增加。最初，低水平的父母教育是青少年缺乏身体活动的预测因素，但是这种影响随着时间的推移而减弱，在3年期结束时变得统计上不显著。此外，父母排斥反应显著影响了3年内体力活动不足的增加.
这些发现表明，在COVID-19大流行等情况下，经历父母排斥的青少年更有可能报告久坐行为增加。
■该研究使用了韩国儿童和青年小组调查的多波数据，包括2590名12-14岁的韩国青少年。使用潜在生长建模方法估算了青少年身体不活动的纵向轨迹以及相关因素的影响。
■我们的研究结果表明，随着时间的推移，青少年缺乏体力活动的现象显著增加。大流行开始时，大约七分之一的韩国中学生报告缺乏体育锻炼。然而,三年后,在隔离期间,近五分之一的青少年报告说，他们缺乏体力活动的情况显著增加。最初，低水平的父母教育是青少年缺乏身体活动的预测因素，但是这种影响随着时间的推移而减弱，在3年期结束时变得统计上不显著。此外，父母排斥反应显著影响了3年内体力活动不足的增加.
这些发现表明，在COVID-19大流行等情况下，经历父母排斥的青少年更有可能报告久坐行为增加。
