论文部分内容阅读
目的了解儿童青少年体力活动特征及其对生长发育和代谢指标的影响。方法采用多阶分层整群随机抽样方法对天津市1 824名小学生和初中生进行体力活动调查、体格检查和代谢指标测定(空腹血糖、空腹胰岛素、血脂)。结果 1 824名学生课余体力消耗为879.2 kJ,交通消耗为758.2 kJ,课间体力消耗为503.3kJ,平均每周总能量消耗为2 456.0 kJ,初中生普遍高于小学生,男生高于女生,课余体力消耗与向心性肥胖的各指标之间存在负相关,与某些性别和年龄组的代谢指标负相关。结论儿童体力活动不足会增加体质量超标、肥胖尤其是向心性肥胖的危险,但对代谢指标的影响结果尚不明显。
Objective To understand the physical activity characteristics of children and adolescents and their effects on growth and development and metabolism. Methods A total of 1 824 primary school students and junior high school students in Tianjin were investigated for physical activity, physical examination and metabolic index (fasting blood glucose, fasting insulin, blood lipid) by multi-stage stratified cluster random sampling method. Results 1 824 students spent 879.2 kJ in physical activity, 758.2 kJ in transportation, 503.3 kJ in class, and average total energy consumption per week was 2 456.0 kJ. Junior high school students were generally higher than primary school students, boys were higher than girls, There is a negative correlation between physical exertion and each index of central obesity, and is negatively correlated with the metabolic indexes of some sex and age groups. Conclusion Inadequate physical activity in children increases the risk of overweight and obesity, especially concentric obesity, but the effect on metabolic indices is not obvious.