In November 1942, the Italian cyclist Fausto Coppi took "seven packets of amphetamine" to beat the world hour record on the track.  In 1960, the Danish rider Knud Enemark Jensen collapsed during the 100 km team time trial at the Olympic Games in Rome and died later in hospital. The autopsy showed he had taken amphetamine and another drug, Ronicol , which dilates the blood vessels. The chairman of the Dutch cycling federation, Piet van Dijk, said of Rome that "dope – whole cartloads – [were] used in such royal quantities." 
Since these steroids are meant to improve performance and increase muscle tissue, the heart is going to be affected in one way or the other. Prolonged usage may lead to different cardiovascular problems like increased cholesterol levels, high blood pressure, abnormally high red blood cells count and enlargement of the heart as well as irregular heartbeats. This is owed to the enhanced characteristic of the anabolic androgenic steroid. These problems may lead to heart attacks and failures that may prove to be fatal. However, it should be known that these issues arise with misuse of the steroid.