杭州市城区初中生体力活动行为与认知状况调查

Behavior and knowledge on physical activity among urban junior students in Hangzhou

目的了解杭州市城区初中生体力活动行为与认知情况。方法选取杭州市4549名城区初中生进行自填式问卷调查，了解初中生校内外体力活动、静态活动和对体力活动的看法。结果4549名初中生中仅7．50％每天体力活动时间≥60min。初中生每日校外做作业约2h，周末约3h，其他坐着活动的时间每日≥30min和周末约2h的比例最高。初中生每天60min参加体力活动保持健康的知晓率仅为24．63％，不同年级和性别的学生对体力活动作用的认识差异有统计学意义（P〈0．05）。结论杭州市城区初中生仍然缺乏体力活动和相关知识，应开展干预活动促进其体力活动的水平。

Objective To study the status of physical activity （PA） and sedentary behaviors and relevant knowledge to it among junior students. Methods In a cross-sectional study, a self- administered questionnaire was used to assess the PA, sedentary behaviors and relevant knowledge on 4549 eligible urban junior students. Results Among the 4549 junior students, only 7.50% engaged in 〉~60 minutes of PA, per day. Those junior students spending 2 hours on weekdays, 3 hours on weekends in doing homework and those spending ~〉30 rain on weekdays, 2 hours on weekends in doing other sedentary activities, accounted for the highest proportion of the subjects respectively. The awareness rate of spending at least 60 minutes each day on PA to stay fit and healthy was 24.63%. Differences in gender and grade at school were significantly on ＇understanding of health benefits regarding PA＇ （P〈0.05）. Conclusion Urban junior students were lack of awareness and appropriate behavior on physical activities so the related intervention should be taken actively to improve the current situation among the adolescents at school.