体育锻炼能减少发生冠心病(CHD)的危险,其机理可能有两个方面,一是运动能直接影响心脏和循环系统的功能,如增加侧支循环的血流量,改善心输出量等;二是锻炼能通过影响发生CHD的危险因素如肥胖、血压或血液脂蛋白成分的浓度等发挥间接作用。近20年来的研究表明,血液高密度脂蛋白胆固醇(HDL-C)与CHD的发病率呈负相关。本文 Physical exercise can reduce the risk of coronary heart disease (CHD), its mechanism may have two aspects, first, exercise can directly affect the heart and circulatory system functions, such as increased collateral circulation blood flow, improve cardiac output, etc .; Exercise can play an indirect role by influencing the risk factors for CHD such as obesity, blood pressure or blood lipoprotein concentrations. Nearly 20 years of research have shown that blood HDL-C and CHD incidence was negatively correlated. This article