Fardy P S, Maresh C M, Abbott R D
Med Sci Sports. 1976 Spring;8(1):26-30.
Heart rate (HR), total electromechanical systole (Q-S2), left ventricular ejection time (LVET), pre-ejection period (PEP), and diastole (D) were compared in 350 former athletes and 156 non-athletes, age 27-74. The two cohorts had been equated according to habitual leisure time physical activity. Former athletes exhibited significantly longer Q-S2 and PEP at rest, and significantly lower HR and lengthened Q-S2, LVET, PEP, and D at one minute following a standard two minute step test (less than 0.05). Significantly differences were observed between athletes and non-athletes in the light and moderate activity categories. There were no significant differences between former athletes and non-athletes currently engaged in strenuous leisure time physical activity. Comparisons were made among the three levels of habitual leisure time physical activity with each group and revealed that HR was lower and Q-S2, LVET, PEP, and D were longer at rest and following exercise as the level of physical activity increased. There were more significant differences among former athletes than among non-athletes. Most of these differences were between light to moderate and light to strenuous levels of activity. The evidence suggests an advantage in myocardial function among former athletes compared to their non-athlete counterparts.
对350名年龄在27至74岁之间的前运动员和156名非运动员进行了心率（HR）、总电机械收缩期（Q-S2）、左心室射血时间（LVET）、射血前期（PEP）和舒张期（D）的比较。根据习惯性休闲时间身体活动情况，将这两组人群进行了匹配。前运动员在静息状态下的Q-S2和PEP显著更长，在标准的两分钟踏车试验后一分钟时，HR显著更低，Q-S2、LVET、PEP和D延长（P<0.05）。在轻度和中度活动类别中，运动员和非运动员之间观察到显著差异。目前从事剧烈休闲时间身体活动的前运动员和非运动员之间没有显著差异。对每组习惯性休闲时间身体活动的三个水平进行比较，结果显示，随着身体活动水平的提高，静息和运动后的HR更低，Q-S2、LVET、PEP和D更长。前运动员之间的显著差异比非运动员之间更多。这些差异大多存在于轻度至中度和轻度至剧烈活动水平之间。证据表明，与非运动员相比，前运动员的心肌功能具有优势。
