Study On The Relationship Between Sedentary Time,Physical Activity And Abnormal Body Posture In Children And Adolescents

ObjectiveTo analyze the status quo of posture abnormality of children and adolescents in China,focusing on the relationship between physical activity 、 sedentary time and posture abnormality.Methods(1)This study reviewed the existing research results related to abnormal body posture of children and adolescents in detail through the method of literature,and refined the research background and research problems.(2)The data used in this paper came from 《 the Survey of Children and Adolescent Body Posture and Lifestyle》,which was organized and implemented by the Sports Science Research Institute of the State Sports General Administration,aiming to comprehensively understand the current situation and characteristics of adolescents’ body posture.The survey covered five cities: Beijing、Dalian、Nantong、Zhuhai and Wuhan.The survey subjects were school children aged 7-18,and the final effective sample size was 9883 people.(3)In this study,descriptive statistics were used to summarize the status quo of body posture abnormality in children and adolescents,and multiple linear regression was used to verify the relationship between sedentary time,physical activity and body posture abnormality.Results(1)Through statistical analysis,it can be seen that children and adolescents all have different degrees of posture abnormality.The score of posture abnormality ranges from low to high.The higher the score,the higher the degree of posture abnormality.Among respondents,the lowest score was 7,indicating the lowest degree of posture abnormality.The highest score is 28 points,indicating the highest degree of posture abnormality.(2)In the score of abnormal posture,the proportion of female students in the score of 16-20 was 33.7%,and the proportion of female students in the score of 21-28 was 6.3%.The comparison showed that the abnormal rate was higher than that of male students.The independent sample t-test method found that P=0.008<0.05,indicating that there is a significant statistical difference in the status of body posture abnormality among children and adolescents.(3)Physical activity and sedentary time are the two related factors of abnormal posture.The proportion of female students who meet the international recommended level of physical activity is listed as 3.7%,and the proportion of male students is 6%.According to the data P=0.007< 0.05,indicating that there is a significant gender difference in physical activity between male and female students,and male students are significantly more involved in physical activity than female students;The average weekly sedentary time of female students is 2260.87 minutes,while that of male students is 2230.15 minutes.The overall sedentary time of female students is higher than that of male students.However,in terms of sedentary type,male students’ weekly entertainment screen time higher than female students.(4)There is a significant positive correlation between the total sedentary time and the abnormal body posture of children and adolescents.Specifically,for every 1unit increase in the total weekly sedentary time,the score of abnormal posture increased by 75.1%.(5)Among all types of sedentary time,entertainment screen time has the greatest influence on the abnormal body posture of children and adolescents.Specifically,for every 1 unit increase in entertainment screen time,the score of abnormal body posture increased by 21.3%.(6)Physical activity has a significant effect on reducing posture abnormality caused by sedentary time.Specifically,the risk of posture abnormality caused by sedentary time decreases by 20.8% for every 1 unit of physical activity increase.Conclusion(1)children body posture abnormal degree is not optimistic in our country,the body posture very low proportion of normal children,the other incorrect posture with screen position to read and write people have more than 50%,improve the abnormal posture,it is urgent to promote children physical health.(2)There are gender differences in body posture abnormality,so we need to pay more attention to girls’ daily body posture and reduce the abnormality rate.(3)The total sedentary time is positively correlated with the body posture of children and adolescents.The longer the sedentary time of children and adolescents is,the higher the probability of abnormal body posture is.Therefore,reducing the total sedentary time can alleviate the body posture abnormality of children and adolescents.(4)Entertainment screen time has the greatest influence on children and adolescents’ body posture.Controlling entertainment screen time in daily life can improve children and adolescents’ body posture abnormality to the greatest extent.(5)Increasing physical activity is important for reducing posture disorders associated with prolonged sitting,and meeting the international recommendations for physical activity can significantly reduce posture disorders associated with prolonged sitting.