Study On The Correlations Among Physical Activity,Sedentary Behavior,BMI And Vision Health In Children And Adolescents

At the present stage,levels of physical activity in children and adolescents has decreased sharply,and time spent in sedentary behaviors has increased continuously.Meanwhile,the rate of BMI abnormalities in children and adolescents is not optimistic,with the rate of overweight and obesity kept rising.As a new type of health issue in children and adolescents,the problem of vision health has become increasingly serious worldwide.In China,the problem of the vision health of children and adolescents should be taken into consideration.It is reported that the rate of poor vision among children and adolescents in China remains high.The overall myopia rate of children and adolescents in China reached 52.7% at the end of 2020,with a trend of further growth.Therefore,how to correctly cope with and prevent the continued high incidence of myopia among children and adolescents has become a problem that the government and the whole society should pay attention to.This study analyzes the relationship among levels of physical activity,sedentary behavior,BMI,and visual health,and discusses the impact and predictive role of physical activity,sedentary time,and BMI on visual health,providing evidence for effective prevention of poor vision.2675 children and adolescents from eight primary and secondary schools in different regions were randomly selected as the participants of this study.Levels of physical activity,levels of sedentary behavior,BMI,and vision health in children and adolescents were analyzed with demographic characteristics(i.e.,age and gender).Through the research mentioned above,the following conclusions are drawn:1.The overall levels of physical activity in children and adolescents in China is at the average level.The sedentary behavior in children and adolescents in China shows an increasing trend with the growth of grades.Educational sedentary behavior,cultural sedentary behavior,and video sedentary behavior are the main types of sedentary behavior in children and adolescents.In China,the prevalence of overweight and obesity among children and adolescents in high school is significantly higher than that in primary school and middle school.The situation of vision health in children and adolescents in China is not promising.The level of vision declines with grades.2.Level of physical activity,sedentary behavior,and BMI in children and adolescents are closely related to the level of vision.The higher the level of physical activity in children and adolescents,the lower the sedentary time,and the higher the level of vision.And children and adolescents with a BMI of obese,overweight,and low-weight generally have levels of vision below average.3.Physical activity,sedentary behavior,and BMI could be considered as one of the important factors to improve the levels of vision in children and adolescents.Increasing physical activity,reducing sedentary time,and controlling BMI may be the potential approaches to improve vision.