哈尔滨某中学隐性肥胖青少年心血管代谢危险性调查

了解体重正常而体脂肪含量超标的“隐性肥胖”青少年与正常组心血管代谢指标的差异,为评估青少年肥胖及心血管代谢风险提供依据.方法 选取哈尔滨市体质监测点校某中学的623名初中生进行体格检查、体成分测定及相关代谢生化指标检测.将BMI正常的369名初中生作为研究对象,将体脂率男生>20%,女生>25%定义为隐性肥胖,其中隐性肥胖组134名,正常组235名.结果 学生隐性肥胖检出率为36.3%,其中男生为18.9%,女生为48.6%(x2=34.06,P<0.05).隐性肥胖组总胆固醇(TC)和低密度脂蛋白胆固醇(LDL-C)水平均高于正常组,男生隐性肥胖组三酰甘油(TG)水平高于正常组,女生隐性肥胖组高密度脂蛋白胆固醇(HDL-C)水平低于正常组(P值均<0.05);隐性肥胖组血压、血糖水平与正常组之间的差异均无统计学意义(P值均>0.05).男生隐性肥胖组高TG血症检出率高于正常组,女生隐性肥胖组高TC、高LDL-C检出率均高于正常组(P值均<0.05),但男女生隐性肥胖组与正常组的血压偏高和高血糖的检出率差异均无统计学意义(P值均>0.05).结论 哈尔滨市某中学隐性肥胖检出率较高,隐性肥胖的青少年存在一定比例血脂代谢异常.及早识别青少年隐性肥胖,对控制心血管代谢性疾病具有积极意义.

Cardiovascular metabolic risk in invisible obesity adolescents of a middle school in Harbin

Objective This study aims to compare cardiovascular metabolic indexes between adolescents with normal weight and invisible obesity,and to provide basis for evaluate obesity and cardiovascular metabolic risk of adolescents.Methods Atotal of 623 junior high school students were selected from one urban school in Harbin.Physical examination,body composition and metabolic biochemical test were carried out.There were 134 students classified as invisible obesity,defined as normal BMI but PBF >20% in male or >25 in female.A total of 235 students were selected as control group.Results The detection rate of invisible obesity was 36.3%(18.9% in boys and 48.6% in girls,respectively),with girls higher than boys(x2=34.06,P<0.05).The levels of TC and LDL-C was higher in invisible obesity group than control group,and the levels of TG were higher in invisible obesity group than control group among male adolescents,the levels of HDL-C were lower than control group among female adolescents (P< 0.05).There were no significantly differences in the level of blood pressure and blood glucose between in the two groups(P>0.05).Comparing with control group,hypertriglyceridemia was higher in boys with invisible obesity,while hypercholesterolemia and hyper -LDL-C were higher in girls with invisible obesity(P<0.05),but no significant differences in hypertension and hyperglycemia were found between two groups (P>0.05).Conclusion Invisible obesity is quite common among Chinese adolescents.Abnormal lipid metabolism already presents in invisible obese adolescents.Early identification of adolescents with invisible obesity would be effective for cardiovascular metabolic diseases prevention.