Morganroth J, Maron B J
Ann N Y Acad Sci. 1977;301:931-41. doi: 10.1111/j.1749-6632.1977.tb38259.x.
Although earlier electrocardiographic and roentgenographic studies suggested that the heart of trained athletes differed from that of nonathletes, little was known of the cardiac dimensions of the athlete's heart until the advent of echocardiography. Echocardiographic studies have demonstrated that trained athletes may have increased left ventricular mass and that the structural change accounting for this increase is related to the type of physical conditioning. Athletes participating primarily in isotonic exercise have an increase in left ventricular end-diastolic volume with little or no increase in left ventricular wall thickness whereas those athletes participating primarily in isometric exercise have an increase in left ventricular wall thickness associated with normal left ventricular end-diastolic volume. Comparisons between echocardiographically determined cardiac changes in college and world class athletes were made, and the electrocardiographic and chest roentgenographic changes present in the athlete's heart syndrome were reviewed.
尽管早期的心电图和X线研究表明，受过训练的运动员的心脏与非运动员的心脏有所不同，但在超声心动图出现之前，人们对运动员心脏的大小知之甚少。超声心动图研究表明，受过训练的运动员可能左心室质量增加，而导致这种增加的结构变化与体能训练的类型有关。主要参与等张运动的运动员左心室舒张末期容积增加，而左心室壁厚度几乎没有增加或没有增加，而主要参与等长运动的运动员左心室壁厚度增加，同时左心室舒张末期容积正常。对大学运动员和世界级运动员超声心动图测定的心脏变化进行了比较，并回顾了运动员心脏综合征中出现的心电图和胸部X线变化。
