杭州市3个城区初中生体力活动达标率及其关联因素分析

Prevalence rate regarding the completion of ＇recommended physical activities＇ and related influencing factors among junior students in 3 urban districts of Hangzhou

目的了解杭州市3个城区初中生体力活动达标情况及其关联因素。方法以杭州市3个城区3867名初中生作为研究对象了解其体力活动达标情况，用logistic回归建立模型分析社会人口学特征、认知因素和体力活动环境与体力活动达标的关联情况。结果杭州市3个城区3867名初中生体力活动达标率为7．7％，对于每天应该运动时间的正确认知率为31．0％，59．2％的初中生每周至少有3d上体育课。男性（OR=2．94）、认为每天至少应该运动60min（OR=4．95）、对于参加体力活动持正性结果预期（OR=1．07）、一周上体育课的频率≥3d（OR=1．44）、家人鼓励运动（OR=1．06）、家人陪着一起做运动（OR=1．14）、家里运动器材充足（OR=1．22）、居住地周边运动场所可及性好（OR=1．09）、对于在居住地周围步行或者慢跑的安全性评价差（OR=1．11）与初中生体力活动达标呈正相关。结论社会人口学、认知及支持性环境3个层面的因素对于初中生体力活动达标与否均有影响。

Objective To explore the rate on completion of the recommended physical activities and its correlates among junior students in 3 urban districts of Hangzhou. Methods Describing the range on completion of the recommended physical activities and analyze its related demographic, cognitive and environmental factors with logistic regression model among 3867 juniors students. Results 7.7% of the junior students could achieve the recommended physical activities requirements. The proportions of students who were aware of the recommendation on physical activity programs showed as 31.0%. 59.2% of juniors students had physical education （PE） classes in 3 days or more within 1 week. Factors as being male （0R=2.94）, believing that adolescents should take part in at least 60 minutes＇ physical activities a day（OR=4.95）, having PE classes in 3 days or more within 1 week （OR= 1.44）, with family encouragement on physical activities （OR= 1.06） and taking part in physical activities together （OR = 1.14）, perceiving the idea that they had enough sports equipment at home （OR=1.22） and had convenient access to sports facilities around the residential areas （OR= 1.09）, and perceiving the idea that it was not safe to walk or jog around the residential area （OR= 1.11 ） etc. had statistically significant correlations with achieving the recommended physical activities among juniors students. Conclusion Demographic, cognitive and environmental factors had some influence on the completion of recommended physical activity program among junior students.