中国5省市中学生危险行为调查报告（四）——日常饮食和体育锻炼状况

目的 了解中国中学生日常饮食和体育锻炼的现状。方法 1999年5－6月，选取北京、天津、深圳、沈阳和云南40所中学的初一和高一学生16580名，采取中学生危险行为问卷调查。结果 仅有25．7％的学生经常食用蔬菜水果；有34．6％的学生很少食用高脂饮食；有31．2％的学生认为自己体重偏胖，近期采取减肥措施的学生占34．3％。经常进行体育锻炼的学生占47．0％，经常连续步行或骑车30min以上的学生比例占37．4％，有88．9％的学生报告每周上2次或以上体育课，而只有65．1％的学生每节课运动20min以上。结论，在中学生中进行平衡膳食的营养教育和科学的体育锻炼是必要的。

Daily Dietary Behaviors and Physical Activities of Chinese Middle School Students in 5 Provinces and Cities

Objective To evaluate Daily dietary behaviors and physical activities of Chinese middle school students. Methods A questionnaire survey was conducted among 16580 students in the first grade at junior high school and senior high school levels from May to June 1999 in Beijing, Tianjin, Shenzhen, Shenyang and Yunnan. Results Among the surveyed students, Only 25.7% of students ate often fruits and vegetables, 34.6% rarely ate foods rich in fat, 31.2% thought they were overweight and 34.3% took measures to lose weight; 47.0% took part in sports activities frequently, 37.4% often walked or bicycled for a duration of 30 minutes or more continuously; 88.9% reported attending physical education class twice or more a week, however, only 65.1% took more than 20 minutes of exercise during a physical education class. Conclusions It is necessary for middle school students to receive nutrition education on balanced diets and physical training.