摘要:
了解北京市西城区高中生校内不同强度体力活动情况,为学校采取措施促进学生体力活动提供客观依据.方法 抽取北京市西城区的一类、二类和三类高中各2所,每所高中随机抽取健康高一学生40名,共采集有效样本208人(男生102名,女生106名).使用ActiGraph GT3X+加速度计,记录并分析学生1周在校期间体力活动水平.结果 在校期间,女生静坐少动时间高于男生,低强度体力活动(LPA)和中等强度至较大强度体力活动(MVPA)时间均低于男生(P值均<0.01),体育课也显示出相同的情况.三类高中学生在校期间静坐少动行为占比高于一类和二类高中学生,而MVPA总时间占比较低(P值均<0.05).在体育课中,男女生平均分别有13,19 min处于静坐少动状态,15,10 min进行MVPA.本研究中受试者均未能达到体力活动指南所推荐的“每天参与至少60 min中高强度运动”的目标.结论 女生体力活动水平低于男生,体育课中学生用于中高强度运动的时间偏少,一类和二类学校学生在校期间体力活动水平整体高于三类学校学生.
Abstract:
Objective To evaluate in-school physical activity level of high school students in Beijing,in order to provide evidence for school to take strategies to promote physical activity level of students.Methods A total of 208 healthy adolescents (102 boys and 106 girls) were recruited from six high schools in Xicheng District.ActiGraph GT3X+ was used to measure in-school physical activity of subjects.Results During school time,girls spent more time on sedentary behavior and less time on LPA and MVPA than boys(P<0.01).The same situation showed in PE class.In different levels of high school,students of third level high schools spent more time on sedentary behavior and less time on MVPA than students of first and second level high schools(P< 0.01).In PE class,boys spent 13 minutes on sedentary behavior and 15 minutes on MVPA,while girls spent 19 minutes on sedentary behavior and 10 minutes on MVPA.None of the students' MVPA time met physical activity guideline.Conclusion Girls has got a lower level of physical activity than boys.Middle school students spent less time on moderate and highly-extensive sports in PE class.Students in school of type 1 and 2 had a higher level of in-school physical activity than those in school of type 3.
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