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." 
Research has shown that specific back exercises, known as core strength and stability exercises , can be effective in relieving back pain and restoring normal function. These back exercises are most effective where the problem is caused by poor postural habits and the pain resulting from disc problems. The Stabiliser Pressure Biofeedback Device is very useful for learning these specific exercises. Once the correct technique has been mastered under the guidance of a chartered physiotherapist, these exercises are very easy to do. They are not too vigorous and they can be done by people of all ages. More advanced back exercises using a Swiss Ball are also helpful for back pain prevention.