Abstract Cardiac adaptations to intense exercise may generate electrocardiographic changes that can be confused with signs of heart disease. The accurate interpretation of the findings depends on criteria that classify them as normal (related to exercise), borderline or abnormal (not related to exercise). A systematic review was carried out by searching the PubMed database in April 2020, using the terms: MeSH, electrocardiogram and athlete, with 159 review articles, systematic reviews and meta-analyzes in english, published in the last 5 years, […]