随着心电图和超声心动图等技术的发展和普及,一些常年参加体力劳动人员经常被发现有心脏扩大、心肌肥厚和心律失常等现象。而这些一度曾被当成心肌炎和其它心脏疾患来诊治。近年来有关“运动心脏”概念的确立和取得的一些进展,使我们有可能从生理学角度来认识和探讨这一问题。本文通过对25例常年徒手施工者的心电图、心音图和超声心动图检 With the development and popularization of technologies such as electrocardiogram and echocardiography, some perennial participating manual workers are frequently found to have cardiac enlargement, cardiac hypertrophy and cardiac arrhythmia. These were once treated as myocarditis and other heart diseases. In recent years, some progress made in the concept of “exercise heart” has made it possible for us to understand and explore this issue from a physiological point of view. In this paper, 25 cases of perennial performer ECG, phonocardiogram and echocardiography