Sudden cardiac death less likely after exercise, study says

People whose hearts stop functioning during or shortly after exercising are three times more likely to survive than those who have cardiac arrest unrelated to working out, researchers said. The Amsterdam Resuscitation Study looked at 2,517 cardiac- arrest cases in the Dutch capital's greater metropolitan area over a three-year period. Scientists found 145 of the patients were exercising during or within one hour of cardiac arrest and were mostly biking, playing tennis, working out at a gym or swimming, according to the research presented today at the European Society of Cardiology conference in Munich