Study On The Correlation Between Daily Behavior Patterns And Physical Health Of Middle School Students In Tianji

Purpose:In order to comprehensively understand the distribution of daily behavior patterns and physical health of middle and high intensity physical activity(MVPA),screen time(ST)and sleep duration(SLP)of middle school students in Tianjin,and comprehensively explore the independent and integrated effects of daily behavior patterns composed of MVPA,ST and SLP on physical health of students,so as to provide intervention measures for physical health of middle school students An effective reference.Methods:The main research methods used in this study include literature,questionnaire,physical activity measurement,physical fitness test and mathematical statistics.Firstly,major studies on the relationship between MVPA,ST,SLP and physical health of students at home and abroad in recent years were collected and analyzed.Secondly,stratified random cluster sampling method was used to select 12 middle schools(6middle schools and 6 high schools)in Tianjin,and 50 students were randomly sampled in each school year for physical health test and daily behavior survey.Finally,1614 middle school students were included in the analysis,and the effective rate was90%.According to the Canadian 24-hour Activity Guide,the subjects’ behaviors were divided into compliance group.(1)The MVPA situation was divided into MVPA "Qualifying group" and "Nonconforming group";(2)The ST condition was divided into ST "Qualifying group" and "Nonconforming group";(3)SLP was divided into SLP "Qualifying group" and "Nonconforming group".According to the number of conforming items,the behavior combination was divided into four groups: "Full standard group","Reach 2 item group","Reach 1 item group" and "Unqualified group".Finally,SPSS 25.0 was used for analysis.The basic situation of daily behavior pattern and physical health test results of Tianjin middle school students was expressed by x ±S;the comparison of daily behavior pattern and physical health test results between different genders was conducted by independent sample t test;the comparison of daily behavior pattern and physical health test results between different grades was conducted by one-way analysis of variance.Chi-square test was used to compare the standard of daily behavior pattern and the grade of physical health test results.Comparative independent sample T-test or one-way analysis of variance of physical health test results of different qualifying groups;Chi-square test was used to compare the physical health test results of different qualifying groups.The daily behavior pattern was used to predict physical health risk by binary Logistic regression analysis.Result:(1)The MVPA compliance rate of middle school students in Tianjin was the lowest,accounting for 12.4%.Only 4.7% of middle school students reached all three standards,while 16.4% of male students failed to reach all three standards.31.1% of the students met the two recommended standards(3.7% for MVPA+ST,2.0% for MVPA+SLP,25.45% for ST+SLP);47.8% of the students met only one recommendation(2.0% MVPA,35.6% ST and 10.2% SLP),and the difference was statistically significant(P<0.01).(2)With the exception of pull-ups for boys and sit-ups for girls,the performance of other test indicators and total score of physical health of middle school students in Tianjin was the best in the third grade,while most of the middle school students could reach the passing level in all indicators of physical health except pull-ups,and the differences were statistically significant(P<0.01);The excellent and good rate of male pull-up only accounted for 15.6%,and there were 435 students(55.3%)failed,the difference was statistically significant(P<0.01).(3)The BMI of most middle school students in Tianjin reached the normal level,1214(75.2%),but the overweight and obesity rate was still relatively high,with 268overweight(16.6%)and 105 obese(6.5%),the difference was statistically significant(P<0.01).(4)MVPA deficiency is a risk factor affecting the performance of middle school students in 50 m running,standing long jump,pull-up and 1,000 m running.The risk of non-performance in 50 m running without reaching the standard increases by 0.45times(P<0.05),the risk of poor standing long jump was increased by 0.52 times(P<0.01)and a 2.07 fold increased risk of non-optimal pull-ups(P<0.01)and a 0.71 fold increase in the risk of non-excellence in 1000m(P<0.05).(5)Excessive ST length is a risk factor affecting high school students’ vital capacity,sit-up,1,000 m and 800 m achievement standards(P<0.05),the risk of non-optimal ST vital capacity was increased by 0.30 times(P<0.01),the risk of non-superior sit-ups increased by 0.99 times(P<0.01)and a 0.41 fold increase in the risk of non-excellence in 1000m(P<0.05)and a 1.00-fold increase in the risk of non-excellence in the 800m(P<0.01).(6)SLP deficiency is a risk factor for overweight and obesity and good performance in 50 m,1000m and 800 m races(P<0.01).There was a 0.46 fold increase in the risk of overweight and obesity in the study(P<0.05)and a 0.80-fold increase in the risk of non-excellence in 50 m running(P<0.01)and a 0.92 fold increase in the risk of non-excellence in 1000m(P<0.05)and a 1.13-fold increase in the risk of non-excellence over 800m(P<0.01)and a 0.94 fold increase in the overall risk of non-optimal physical health tests(P<0.01).(7)From the overall evaluation results of physical health,insufficient MVPA,too long ST and insufficient SLP all have certain physical health risks,and the risk of insufficient MVPA increased by 0.66 times(P<0.01),the physical health risk of excessively long ST increased by 0.35 times(P<0.01),the physical health risk of SLP deficiency increased by 0.94 times(P<0.01);From the perspective of behavioral combination,the physical health risk of both the group that Unqualified group and the Reach 1 item group increased by 2.63 times(P<0.01),compared with the group that Full standard group 1.10 times(P<0.01).Conclusion(1)In the daily behavior pattern of middle school students in Tianjin,the MVPA compliance rate is low,only 12.4% of middle school students can meet the standard,and only 4.7% of students can meet the standard of MVPA,ST and SLP,most middle school students can meet the standard of ST,but the mean sleep time of high school students in Tianjin is significantly lower than the recommended standard of sleep.(2)The overall evaluation result of physical health of middle school students in Tianjin is good,but the problem of overweight and obesity is still serious.The failure rate of male pull-ups is high,and the rate of excellent and good is low.(3)The physical health test results of MVPA,ST and SLP conforming group of Tianjin middle school students were all better than those of non-conforming group,and the ratio of excellent and good was higher.All behaviors conforming group had higher physical health risks than conforming group to a certain extent.(4)The optimal behavior pattern(MVPA+ST+SLP)can obtain ideal physical health results,and reaching any two recommended dosage combinations(MVPA+ST,MVPA+SLP,ST+SLP)can also effectively produce physical health benefits.There is relatively high physical health risk when only one or none of the recommended behavioral amounts of MVPA,ST and SLP is reached.