运动的好处是无可辩驳的，运动强度与心血管疾病减少之间存在着明确的剂量依赖关系。进一步通过更先进的成像技术，如心脏磁共振成像（CMR），区分运动生理适应，即“运动员心脏”，与心肌病，已经得到推进。在看似健康的耐力运动员和心肌病患者中，CMR上的心肌纤维化是一个共同的发现。作为心律失常的基质，纤维化传统上与增加的心血管风险有关。在本文中，我们讨论了运动员心脏中心肌纤维化的病因学、分布和潜在影响。版权所有 © 2023作者。由Elsevier B.V.出版。保留所有权利。

The benefits of exercise are irrefutable with a well-established dose-dependent relationship between exercise intensity and reduction in cardiovascular disease. Differentiating the physiological adaptation to exercise, termed the "athlete's heart" from cardiomyopathies, has been advanced by the advent of more sophisticated imaging modalities such as cardiac magnetic resonance imaging (CMR). Myocardial fibrosis on CMR is a mutual finding amongst seemingly healthy endurance athletes and individuals with cardiomyopathy. As a substrate for arrhythmias, fibrosis is traditionally associated with increased cardiovascular risk. In this article, we discuss the aetiologies, distribution and potential implications of myocardial fibrosis in athletes.Copyright © 2023 The Author. Published by Elsevier B.V. All rights reserved.