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心机械图测量240名正常人和50名中老年慢跑运动员的主动舒张时间,主动舒张时间指数,左心尖搏动图A波的相对振幅,舒张期振幅时间指数,快速充盈波的相对振幅和O-F间期等指标。结果证明:正常人的左心室主动舒张功能和顺应性,有随年龄增长而自然“衰变”的趋势,50岁以后这种“衰变”尤为显著(P<0.05)。慢跑运动能使中老年人的左心室舒张性和顺应性获得较大的改善,使其自然“衰变”现象明显延缓。
Cardiac mechanical measurements of 240 normal subjects and 50 middle-aged and long-distance jogging athletes active relaxation time, active diastolic time index, relative amplitude of left apex beat A wave, diastolic amplitude time index, the relative amplitude of fast filling wave and OF between Period and other indicators. The results show that: normal left ventricular active diastolic function and compliance, with age, natural decay trend, after 50 years of age, this “decay” is particularly significant (P <0.05). Jogging exercise can make the elderly in left ventricular diastolic and compliance have been greatly improved, so that its natural “decay” phenomenon was significantly delayed.