Song Chao, Guo Haijun, Gong Weiyan, Zhang Yan, Ding Caicui, Feng Ganyu, Liu Ailing
National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
Wei Sheng Yan Jiu. 2017 Sep;46(5):705-721.
To describe the status of sedentary activities of the Chinese pupils in the leisure time, and to provide basic information for developing intervention strategies.
Utilizing the data of 2010-2012 China National Nutrition and Health Surveillance, using the multi-stage stratified cluster randomization sampling method, a total of 39 242 pupils on sedentary activities including watching TV, using computer, playing computer games, reading and doing homework, was analyzed. Age and sex standardization was performed based on the China 2009 population published by National Statistics Bureau. The sedentary time after weight adjustment for complex sampling was reported to analyze the time distribution of Chinese pupils.
The average time of Chinese pupils' sedentary activities was 2. 92 h/d. There was significant difference between the urban and rural area( 3. 04 h vs 2. 81 h), the boys spent more time slightly on the sedentary activities in their spare time. The senior high school students spent more time on the sedentary activities than the junior school students( 3. 45 h vs 3. 06h), who spent more time than the elementary school students( 3. 06 h vs 2. 60 h). The prevalence of engaging sedentary activities longer than 2 hours was 86. 2%, there was significant difference between the urban and rural area( 87. 5% vs 85. 1%) and the ratio of boys and girls was 86. 4% and 86. 0%, respectively. More senior high school students engaged in sedentary activities longer than 2 hours daily than the junior school students, and the proportion of the junior school students engaged in sedentary activities longer than2 hours was higher than the elementary school students. The average daily homework time was 1. 48 h, and boys spent less time on homework than girls slightly( 1. 44 h vs 1. 52 h). Pupils in the senior school engaged more time in their homework than the junior school students( 1. 90 h vs 1. 62 h). and pupils in the junior school engaged more time in their homework than the elementary school students( 1. 62 h vs 1. 20 h).
Chinese pupils engaged too much time in sedentary activities in the leisure time, so it is recommended that schools and families create a supportive environment, encouraging the children to reduce their sedentary activities and to improve their physical activity levels.
描述中国小学生闲暇时间久坐活动状况，为制定干预策略提供基础资料。
利用2010—2012年中国国家营养与健康监测数据，采用多阶段分层整群随机抽样方法，共分析39 242名小学生的久坐活动情况，包括看电视、使用电脑、玩电脑游戏、阅读和做作业。根据国家统计局公布的2009年中国人口数据进行年龄和性别标准化。报告复杂抽样权重调整后的久坐时间，以分析中国小学生的时间分布情况。
中国小学生久坐活动平均时间为2.92小时/天。城乡之间存在显著差异（3.04小时对2.81小时），男孩在闲暇时间的久坐活动时间略多。高中生的久坐活动时间多于初中生（3.45小时对3.06小时），初中生多于小学生（3.06小时对2.60小时）。久坐活动时间超过2小时的患病率为86.2%，城乡之间存在显著差异（87.5%对85.1%），男女生比例分别为86.4%和86.0%。每天久坐活动时间超过2小时的高中生多于初中生，初中生久坐活动时间超过2小时的比例高于小学生。平均每日作业时间为1.48小时，男孩做作业时间略少于女孩（1.44小时对1.52小时）。高中生做作业时间多于初中生（1.90小时对1.62小时），初中生多于小学生（1.62小时对1.20小时）。
中国小学生在闲暇时间久坐活动时间过长，建议学校和家庭营造支持性环境，鼓励儿童减少久坐活动，提高身体活动水平。
