基于多普勒频谱图的力量项目运动员左室舒张期室壁运动研究

A Study on Left Ventricular Diastolic Wall Motion of Static Athletes by Using Cardiac Wall Doppler Spectrum

通过测定和比较正常人和力量项目运动员在静息和逐级递增负荷运动时,室壁多普勒频谱图上E波和A波峰值速度,研究左室后壁主动松弛和被动充盈功能的变化。结果表明:在静息状态,力量项目组房缩期心房收缩对于左室舒张充盈的贡献小于正常组;在逐级递增负荷中,力量项目组心脏舒张功能的动员表现为同时动用主动舒张储备和左房收缩储备,显示出心脏主动舒张的能力强,左房收缩储备大。

By using cardiac wall Doppler spectrum,through the tests designed to compare the E and A wave peak velocity of normal persons and static athletes,this study focuses on the changes of left ventricular diastole wall and its ventricular systole. The findings are： Static athletes＇ atrial systole contributes less to left ventricular diastolic function than the normal group; while during the incremental loads periods,the static athlete group shows the activation of both diastole reserve and systole reserve,which indicates positive diastole capacity and a higher level of reserve of left atrial systole.