Study On Status And Relationship Of Sedentary People’s Physical Activities And Health

Research objective: The sedentary population is a special group clustered under the modern production and life style.With the development of science and technology information,sedentary behavior has become a common phenomenon in People’s Daily life and work.The number of health problems associated with sitting for long periods of time is increasing.Although previous studies have shown that physical activity is one of the important factors affecting physical health,for the special group of sedentary people,how their physical activity participation,their physical health status,and the relationship between them still need to be further studied and discussed.Research method: Based on the project "Fitness Population Data Tracking Survey in Hebei Province" commissioned by the Hebei Sports Bureau,this study screened 208 respondents who met the criteria of sedentary population,including those who never exercised,from the tracking survey of this project.The physical activity of sedentary people was investigated by using the "Questionnaire on physical activity of sedentary people",and the physical fitness test combined with bone density and body composition measurement was used to obtain physical health data of sedentary people.SPSS26.0 was used to process the data.Descriptive analysis and multiple response analysis were used to analyze the physical activity participation and physical health status of the sedentary population.One-way analysis of variance(ANOVA)was used to compare the physical health status of sedentary people with different amounts of physical activity between groups.LSD test was used for post-hoc multiple comparisons of indicators with differences between groups.Pearson correlation test was used to analyze the correlation between physical activity and physical health status in sedentary population.P<0.05 was considered statistically significant.Research results:(1)The intensity,time and frequency of physical activity for sedentary people are mostly based on 1-2 times a week,with 31-59 minutes of small intensity exercise each time.The sedentary population had a higher number of medical history,accounting for42.3% of the total number.The excellent rate of physical fitness test was low,only accounting for 18% of the total number of people.The average value of body composition BMI index was 24.29±3.66 kg/ ㎡,which was evaluated as overweight.The average value of BMD T-value index was-0.45±1.28,and there was bone mass reduction,accounting for 33% of the total population.(2)There were highly significant differences in body weight,vertical jump and sit and reach among the sedentary population(P<0.01).There were highly significant differences in BMI,FM and BFP among different levels of physical activity(P<0.01),and significant differences in WHR(P<0.05).There were highly significant differences in T value,Z value,SOS and BUA among different levels of physical activity(P<0.01).(3)Physical activity intensity was highly significantly correlated with body weight,vertical jump,sit and reach and choice reaction time(P<0.01),and significantly correlated with vital capacity,push-ups and sit-up(P<0.05).Physical activity time was highly significantly correlated with grip strength,vertical jump and sit-up(P<0.01),and significantly correlated with vital capacity(P<0.05).The frequency of physical activity was highly significantly correlated with the indexes of vertical jump and sit-up(P<0.01),and significantly correlated with the indexes of grip strength and sit and reach(P<0.05).Physical activity was highly significantly correlated with body weight,vertical jump,sit-up and sit and reach(P<0.01),and significantly correlated with vital capacity,grip strength,push-up and choice reaction time(P<0.05).Physical activity intensity was highly significantly correlated with BMI,FM,BFP and WHR(P<0.01).Physical activity time was significantly correlated with muscle mass in body composition and BFP(P<0.01,P<0.05).The frequency of physical activity was significantly correlated with muscle mass in body composition and BFP(P<0.05).Physical activity was highly significantly correlated with body composition BMI,FM,BFP and WHR(P<0.01,P<0.01,P<0.01,P<0.05).The intensity,time,frequency and amount of physical activity were highly significantly correlated with bone mineral density(BMD)T value,Z value,SOS and BUA(P<0.01).Research conclusion:(1)Sedentary people participate in physical activities with low intensity,short time and low frequency,mostly for the purpose of improving health,preventing diseases and improving exercise ability,and choose the form of activities mainly to carry out aerobic exercise such as walking,running and ball games with friends or colleagues in public sports places.Sedentary people do not develop regular exercise habits,and the factors that restrict their physical activity are mainly lack of organization and guidance,no leisure time,no venue equipment.(2)The sedentary population is a population with a high incidence of chronic diseases,and there is a phenomenon of multiple diseases in one person.Improving the amount of physical activity and reducing the sedentary time is beneficial to reduce the types of chronic diseases.The physical health status of sedentary people showed that the level of respiratory function and cardiovascular function was poor.The index of fat composition is high,overweight is more common,and the phenomenon of central obesity.Bone mineral density has the phenomenon of bone mass reduction.(3)In this study,the sedentary population should pay attention to the selection of physical activity,and give priority to aerobic exercise items with moderate amount of exercise or above,so as to better and effectively reduce the prevalence of chronic diseases and improve the physical health status of the sedentary population.There is a significant correlation between physical fitness test index and physical activity in sedentary population,and bone mineral density indexes were significantly positively correlated.A larger amount of physical activity is conducive to the maintenance and improvement of BMD,and extending the time of physical activity is conducive to improving the effect of physical activity on BMD.In the selection of physical health indicators of sedentary population,bone mineral density index is an important indicator to monitor the physical health problems of sedentary population,which can effectively prevent osteoporosis and predict the risk of fracture.