不同运动时长易筋经锻炼对健康老年人心脏功能的影响

摘要

目的:观察不同运动时长易筋经锻炼对健康老年人心脏形态结构、左心室泵血功能、左心室收缩功能的影响.方法:健康老年人58例分为A组30例和B组28例,A组和B组成员每次分别练习10min和20min的易筋经十二式.锻炼前后检测心脏功能,包括左心室收缩末期内径(ESD)、左心室舒张末期内径(EDD)、左心室舒张末期容量(EDV)、每搏输出量(SV)、每分输出量(CO)、心脏指数(CI)、射血分数(EF)以及短轴收缩率(FS).结果:锻炼12周后,心脏功能检测显示,2组EDV、EDD、SV、CI、EF、FS等各项指标均较锻炼前增加,而ESD有一定程度的下降,其中B组SV、CI、EF锻炼前后差异具有统计学意义(P＜0.05)；锻炼后2组间各项指标比较差异无统计学意义.结论:2组运动时长均对心脏的形态结构产生一定的变化趋势,20min运动时长可使左心室的泵血功能显著改善,但收缩功能无显著变化.从改善心脏功能方面考虑,20min运动时长值得推荐.%Objective: To observe the effect of different exercise durations of Yijinjing on cardiac structure, left ventricular pump function and left ventricular systolic function of the healthy elderly. Methods: Fifty-eight healthy volunteers aged from 60 to 70 were divided into two groups:group A,30 cases, 10 min 12-movements-YiJinJing exer-cise;group B,28 cases,20 min 12-movements-YiJinJing exercise. Cardiac functions,including indexes of end systolic dimension (ESD).end diastolic dimension (EDD),end diastolic volume (EDV),stroke volume (SV),cardiac output (CO),cardiac output index (CD , fractional shortening (FS) and ejection fraction (EF),were measured by using heart ultrasound before and after exercises. Results: At 12th week after exercises, the indexes of ESD,EDV,EDD, SV,CI,EF and FS in both groups were increased, but ESD was decreased. The scores of SV,CI,EF in group B showed significantly differences(P<0. 05). There was no significant difference in each index between two groups after exercises. Conclusion;There are certain trends on cardiac morphology and structure in two exercise groups. Exercise of 20-min duration can improve the left ventricular pump function, but there is no significant difference in contraction function. From the consideration of improving cardiac function, exercise of 20-min duration is recommend-able.