Factors Affecting The Physical Health Of Junior Middle School Students Under The Background Of COVID-19 And Countermeasures

Research objectsIn early 2020,the outbreak and spread of COVID-19,the country has released a number of measures to protect the lives of the people,such as sealing the city and closing the village.Students will be in the background of the normalization of epidemic prevention for a long time.In response to the study and life in the passion environment,the reduction of students’ physical activity time may lead to the decline of their physical health.The purpose of this study is to compare the physical measurement data of junior high school students in Qingpu District of Shanghai in recent three years,analyze the current situation of students’ physical health in the three years from 2018 to 2020,deeply explore its influencing factors,and put forward corresponding coping strategies,so as to provide theoretical support and application basis for relevant research.Research methods:In this paper,Qingpu District,Shanghai,the factors affecting junior high school students’ physical health and countermeasures as the research object.Through the methods of documentation,expert interview,questionnaire survey,physical fitness test and mathematical statistics,the data of physical fitness test in Qingpu District of Shanghai city in 2018～2020 years were analyzed and analyzed.The changes of physical health of junior middle school students in Shanghai District in Shanghai city in recent three years were analyzed,and the factors affecting the physical health of junior middle school students in Qingpu area of Shanghai city were explored,and corresponding countermeasures were put forward.Strategy.Research Results:(1)In terms of body shape,the low weight and overweight rates of boys and girls have no significant change from 2018 to 2020,the normal weight rate is decreasing year by year,and the obesity rate is increasing year by year.(2)In terms of physical function,there is a very significant difference in the average lung capacity from 2018 to 2020.From 2018 to 2019,the lung capacity of boys shows an upward trend,while that of girls shows a downward trend.From 2019 to 2020,the lung capacity of boys shows a significant downward trend,while that of girls shows an obvious upward trend.(3)In terms of physical fitness,the indicators with significant differences and overall downward trend from 2018 to 2019 are: 50 meter running,standing long jump and total score of boys and girls;flexibility quality and upper limb strength of boys;waist and abdomen strength of girls;the indicators with upward trend are: flexibility quality of girls and waist and abdomen strength of boys;the opposite is true from 2019 to2020.There is no significant difference between male and female students in 50 m × 8round-trip running and 1-minute rope skipping from 2018 to 2020.(4)physical activity of junior high school students was significantly negatively correlated with BMI(P<0.05)during COVID-19,and positively correlated with lung capacity and endurance quality(P<0.05).(5)there was a significant positive correlation between appetite and BMI in junior high school students during COVID-19(P<0.05),and a significant negative correlation with chin up / sit ups and endurance quality(P<0.05);and there was a negative correlation between sleep time and vital capacity and endurance quality(P<0.05).(6)when junior high school students were in good mental state during COVID-19,there was a significant positive correlation with lung capacity,endurance quality and total score(P<0.05).Research conclusions:(1)during the period of COVID-19,the vital capacity of boys decreased significantly.The lower limbs strength of boys and girls,the upper limbs strength and endurance quality of boys also decreased significantly,mainly due to lack of physical activity,bad sleep habits and bad psychological state.(2)during the period of COVID-19,physical activities,living habits and mental status of junior high school students were significantly correlated with the general level of physical health,while physical activity deficiency,poor appetite and sleep habits,and failing to maintain a good psychological state were the key factors leading to the decline of students’ physical health.