不同体质水平成年人心血管机能变化特征的比较研究

目的：探讨不同体质水平的成年人心血管机能指标在运动中的变化情况及组间差异。方法：40—49周岁的男性成年人为研究对象，首先对受试者进行标准化体质测试，并按照我国成年人国民体质测定标准进行分组。完成受试者的分组后，应用超声心动技术测量不同体质水平的受试者在安静状态下，运动负荷中及运动后恢复期的相关的心血管机能指标。结果：不同体质水平受试者在左心室舒张末期内径（LVIDd）等心脏形态指标上差异明显，具有统计学意义；而心血管功能组间有着显著的差异，突出表现在血压（BP）、心搏指数（SI）、心率（HR）、射血时间（LVET）等机能指标上；不同体质水平成年人在递增负荷运动中其反映心脏功能的指标变化差异明显，体质水平较差组的受试者表现出心率、血压等指标上升速度较快，最大值偏高等的特点。

A Comparative Study of Changes in Cardiovascular Function among Adults with Different Physical Fitness Levels

Objective： to investigate changes and the between-group differences in the cardiovascular function indicators of adults with different physical fitness levels. Method： choosing 40 -49 years old male adults for the study. The subjects first took standardized a physical fitness test, and then were grouped in accordance with the National Physical Fitness Evaluation Standards for Adults. Echocardiography was used to measure the cardiovascular function indicators of subjects who had different physical fitness levels. Results： A statistically significant difference was found in such cardiac morphology indicators as the LVEDD. Also a significant difference existed in cardiovascular function between the two groups, especially in such indicators as blood pressure （BP）, stroke volume index （SVI）, heart rate （HR）, and left ventricular ejection time （LVET）. There was also a significant difference in the changes of cardiac function indicators for adults with different physical fitness levels in incrementalload exercise, with subjects with poor physical fitness levels showing a faster rise in heart rate, blood pressure and other indicators, and a higher top number.