Study On Physical Activity Level And Influencing Factors Of Junior High School Students In Taivuan

As one of the most natural and basic living conditions,physical activity makes people achieve a sustained and efficient balance of energy intake and consumption in the long-term evolution process.However,with the advent of automation and information age,physical activity gradually drifted away from people's production and life.Since 1979,our country began to organize students' physique monitoring every five years.However,each survey results pointed out that the student's height,weight and other morphological indicators continue to grow.But endurance,flexibility,explosive power and other physical quality indicators showed a trend of sustained decline,especially obesity rates,myopia and vital capacity indicators are always on the edge of unqualified.The decline of adolescent physical health is the result of many factors acting together in a long time.But in these factors,the lack of physical activity is the main reason for the decline in physical fitness of young people,which is recognized at home and abroad.In order to improve the physical health level of students,we must start from improving their physical activity level.This study investigated the physical activity level and static behavior of junior high school students in Taiyuan,based on the perspective of social ecology to understand the main influencing factors of physical activity level of junior high school students in Taiyuan.After investigation and analysis,in order to provide a theoretical basis to improve the level of physical activity of students and to enhance the physical fitness of students.In this study,650 students of grade 1,grade 2 and grade 3 in Taiyuan were selected to participate in the study according to the principle of random stratified cluster sampling.There are two questionnaires were issued: One is a revised questionnaire of children's daily physical activity,which was revised and retested by Li Haiyan scholar of Shanghai Institute of Physical Education.Another is student perception physical activity influence factor scale.The research indicates that:1.At the time of physical activity,most of junior high school students in Taiyuan can be guaranteed to take at least one hour a day of moderate intensity physical activity,but its high intensity physical activity time is obviously insufficient.And there is no exist significant differences between physical activity time of male and female students.2.In the aspect of energy consumption of physical activity,physical activity energy of junior school students are the most consumed in the rest of the day.The 9th grade students consume minimum energy in working days.The average daily physical activity energy expenditure of 8th grade students was the highest.And the difference of the energy consumption between male and female students is the largest.3.In the physical activity project selection,boys like the top three sports: running,basketball and gymnastics.Girls like the top three sports: running,skipping and badminton.The minimum number of participating in swimming and handball.4.Taiyuan junior high school students have serious static life behavior,the static life time is higher than the average level of primary and secondary school students,the static life time increases with the increase of grade.5.The main influencing factors of physical activity include parents peer role,site equipment factors,personal sports participation attitude,self-exercise effectiveness factors,school organizational factors,physical education teacher factors and class teacher factors.