Study On Cardiovascular Risk Of 10-17-year-old Obese Adolescents During Submaximal Exercise

Objective: To understand the cardiovascular risk factors of obese adolescents and the occurrence of myocardial ischemia in submaximal exercise,so as to explore the cardiovscular risk of obese adolescents in submaximal exercise.Methods: 138 obese teenagers(85 males and 53 females)aged 10-17 years old were selected from Haoqian weight-loss training camp to test their height,weight,BMI,WC,WHtR,WHR,FBG,blood lipid,quiet blood pressure,baPWV,ABI and other cardiovascular risk factors by routine methods.Dynamic load ECG was used to analyze the risk of cardiovascular events of all subjects during submaximal exercise based on their myocardial ischemia during submaximal exercise.Results:1.The detection rate of abnormal BMI was 84.06%(male 85.88%,female 81.13%);the detection rate of abnormal WHR was 76.81%(male 75.29%,female 84.90%);the detection rate of WHtR,abnormal WC was 100%;the detection rate of hypertension was 28.6%(34.12%,female 18.87%);the detection rate of uncommon baPWV was 3.53%,male 0;the detection rate of abnormal ABI was 4.71%,male 3.77%;the detection rate of uncommon FBG was 1.45%(male)1.18%,female 1.93%);the detection rate of aberrant TC was 14.49%(male 16.47%,female 11.32%);the detection rate of uncommon TG was 23.91%(male30.59%,female 13.21%);the detection rate of aberrant HDL-C was 13.04%(male 12.94%,female 13.21%);the detection rate of uncommon LDL-C was 14.49%(male 17.65%,female9.43%).2.The incidence of myocardial ischemia was 76.81%(male 84.71%,female 64.15%).The initial load and the proportion of people causing myocardial ischemia were 0 w(18.87%),25 W(46.23%),50 W(25.36%)and 75 W(7.55%).3.The resting systolic and diastolic blood pressure,baPWV,WHtR,WHR,WC,TG,LDL-C and BMI in the left and right sides of myocardial ischemia group were significantly higher than those in the non myocardial ischemia group(p<0.05),and there was no significant difference in other indexes(p>0.05).The systolic blood pressure,diastolic blood pressure,WHtR,TG,LDL-C and BMI of male myocardial ischemia group were significantly higher than those of non myocardial ischemia group,and HDL-C was lower than those of non myocardial ischemia group(p<0.05);The WHtR,WC and BMI of female myocardial ischemia group were significantly higher than those of non myocardial ischemia group(p<0.05),and there was no significant difference in other indexes(p>0.05).4.In male group,systolic blood pressure,WHtR,WC and BMI were the significant cardiovascular risk factors that caused the different initial load of myocardial ischemia.Systolic blood pressure in 0W group was higher than that in 50 W group(p=0.02);in WHtR,0W group was higher than in 25 W,50W and 75 W group(p<0.001);in WC,0W group was higher than in 25 W,50W and 75 W group(p<0.001);in BMI,0W group was higher than in25 W,50W and 75 W group(p<0.001).There was no significant difference among the other groups.In female group,systolic blood pressure,diastolic blood pressure and right ABI were significant cardiovascular risk factors for different initial myocardial ischemia load.Among them,the systolic pressure,50 W were significantly higher than 75W(p=0.03);diastolic pressure,0W were significantly higher than 75W(p=0.04),50 W were significantly higher than 75W(p=0.02);right ABI,0W were significantly higher than 50W(p<0.05)and 75W(p=0.03).There was no significant difference among the other groups.Conclusions:1.The prevalence of cardiovascular risk factors in obese adolescents was higher in males than in females.2.The phenomenon of myocardial ischemia is common in obese adolescents during submaximal exercise,and the occurrence of myocardial ischemia can be caused by low exercise intensity.3.The systolic and diastolic blood pressure,baPWV,WHtR,WHR,WC,TG,LDL-C and BMI of the patients with subarctic myocardial ischemia were higher than those of the patients without myocardial ischemia;WHtR,WC and BMI could predict the occurrence of cardiovascular risk in obese adolescents.4.In submaximal exercise,systolic blood pressure,WHtR,WC,BMI in men and systolic blood pressure,diastolic blood pressure and right ABI in women are important factors reflecting cardiovascular risk.