不同肥胖测量指标对北京市社区人群动脉僵硬度的评价

Correlations between different obese indexes and arterial stiffness among populations at the community level

目的探讨社区人群肥胖及其不同测量指标与动脉僵硬度的相关性。方法北京市4个社区参加体检的2664名经知情同意的研究对象（男性1379名，女性1285名），平均年龄（53．19±15．73）岁，测量身高、体重、腰围（WC）、臀围，并计算其体重指数（BMI）、腰围臀同比（WHR），应用自动PWV分析仪测定颈一股动脉脉搏波传导速度（cfPWV），分析不同肥胖指标（BMI、WC、WHR）与cfPWV的关系。结果2664名受斌者中，BMI（r=0．0829，P〈0．01）、WC（r=0．2659．P〈0．01）、WHR（r=0．2749，P〈0．01）与cfPWV均呈正相关。单因素分析结果显示：将研究对象分为A组（cfPWV≤12m／s）、B组（cfPWV〉12m／s），与A组相比，B组的WC、WHR高于A组，差异有统计学意义（P〈0．05）。BMI在A组与B组之间差异无统计学意义（P≥0．05）。逐步回归分析显示：WC是cfPWV的危险因素，独立于性别、年龄、收缩压、高密度脂蛋白胆固醇、餐后2h血糖因素存在。结论该社区人群中肥胖是动脉僵硬度的独立危险因素，其中不同的肥胖测量指标与动脉僵硬度的相关性不同。

Objective The aim of this study was to investigate the relationship between obesity [ measured by body mass index （ BMI ）, waist circumference （WC）, waist-to-hip ratio （WHR） ] and arterial stiffness on community populations in Beijing area. Methods In a cross-sectional study of 2664 subjects （1379 men and 1285 women） aged （53.19 ± 15.73 years, mean ± standard deviation） , BMI, WC, WHR and other cardiovascular risk factors, were measured and carotidfemoral pulse wave velocity （cfPWV） was measured to assess the arterial stiffness. All the data were analyzed with linear correlation analysis, univariate analysis and stepwise regression method to explore the relationship between obese indexes and arterial stiffness. Results We noticed that a showed the existence of positive correlations between BMI （r= 0.0829, P 〈0.01 ） and cfPWV, WC （r= 0.2659, P〈0.01） and cfPWV, WHR （r：0.2749, P〈0.01） and cfPWV. In univariate analysis, cfPWV was associated with WC≥85 cm（male） or ≥80 cm（famale） （P〈0.01）, WHR≥0.90 （male） or ≥0.85 （famale） （P〈0.01）. Stepwise regression analysis revealed that WC was an independent risk factor of cfPWV, other than age, gender, systolic blood pressure, HDL-C, OGTT2h etc. Conclusion Our findings indicated that obesity was an independent risk factor of cfPWV, which was an early marker of cardiovascular and renal diseases, among community population in Beijing area. There were different relationships between obesity measurement parameters （BMI, WC, WHR） and cfPWV.