Hu Rui, Zheng Hui, Lu Congchao
Department of Endocrinology, TEDA International Cardiovascular Hospital, Tianjin, China.
School of Public Health, Tianjin Medical University, Tianjin, China.
Front Pediatr. 2021 Dec 23;9:767608. doi: 10.3389/fped.2021.767608. eCollection 2021.
Less is known about the effects of the different domains of sedentary behaviors on healthy weight in young children. This cross-sectional study examined the association between sedentary screen time (SST), non-screen-based sedentary time (NSST), and overweight (and obesity) in Chinese preschoolers. Data were collected from the Physical Activity and Health in Tianjin Chinese Children study (PATH-CC), involving healthy children 3-6 years old and their families. Children's overweight status was classified according to the international (IOTF) childhood BMI cut-offs. SST and NSST were reported in minutes/day by parents using the leisure-time sedentary behaviors questionnaire. Logistic regression models adjusted by sex, age, socioeconomic status, outdoor play, and sleep duration were used. In a total of 971 children (55.4% boys), 11.8% were overweight. Generally, children spent 1 h/day in SST and 1 h/day in NSST. Multiple models showed that children who spent more time in SST were more likely to be overweight [OR and 95% CI: 1.22 (1.03-1.45)]. No correlation between time spent on NSST and children with overweight was found ( > 0.05). This study indicated that children who spent more time in SST were more likely to be overweight, but a null correlation between NSST and overweight was found. Longitudinal studies designed to identify associations between exposures to screen media and changes in metabolic parameters during a child's early years are needed.
关于久坐行为的不同领域对幼儿健康体重的影响，人们了解得较少。这项横断面研究调查了中国学龄前儿童久坐屏幕时间（SST）、非屏幕久坐时间（NSST）与超重（及肥胖）之间的关联。数据来自天津中国儿童身体活动与健康研究（PATH-CC），涉及3至6岁的健康儿童及其家庭。根据国际儿童肥胖问题工作组（IOTF）儿童BMI临界值对儿童的超重状况进行分类。父母使用休闲时间久坐行为问卷报告SST和NSST，以分钟/天为单位。使用经性别、年龄、社会经济地位、户外活动和睡眠时间调整的逻辑回归模型。在总共971名儿童（55.4%为男孩）中，11.8%超重。一般来说，儿童每天花1小时在SST上，1小时在NSST上。多个模型显示，花更多时间在SST上的儿童超重的可能性更大[比值比（OR）及95%置信区间（CI）：1.22（1.03 - 1.45）]。未发现NSST时间与超重儿童之间存在相关性（P>0.05）。这项研究表明，花更多时间在SST上的儿童超重的可能性更大，但NSST与超重之间无相关性。需要开展纵向研究，以确定儿童早期接触屏幕媒体与代谢参数变化之间的关联。
