Physical exercise is one of the most effective methods of preventing disease. The current issue of Deutsches Ärzteblatt International (Dtsch Arztebl Int 2009; 106: 713) is devoted to this important topic.
The first article (see http://www.
In the second article (see http://www.
Professor Leyk of the German Sport University in Cologne opens this special issue with an editorial (see http://www.