Walk away from excess running, study says
“Years of extreme exercise efforts appear to erase some benefits you get from moderate exercise, so that your risk of heart disease, of dying of coronary disease, is the same as a sedentary person,” said James O'Keefe, preventive cardiologist at St. Luke’s Hospital in Kansas City, Mo.
O'Keefe said the study found that men who were marathon runners for 25 years had 62 percent more plaque buildup in their coronary arteries than men who were sedentary but were similar to the runners in other respects, including age.
And the increased quantity of plaque in the marathoners’ arteries included both hard, or calcified, plaque and the more dangerous soft, fatty plaque. The latter is the kind that can be predisposed to rupture and cause a heart attack.
. . . Two years ago, in a report published in the journal Mayo Clinic Proceedings, O'Keefe and fellow authors cited evidence that extreme endurance training may cause structural damage to the heart, making it stiff and enlarged. That paper showed that moderate running distances two to five times a week at moderate speeds offered the best health benefits and that even 15 minutes a day of physical activity was helpful.
. . . Running about 15 to 20 miles a week provides optimal health benefits, O'Keefe said. Or walking can provide benefits, from 2 miles a day to as much as 40 miles a week. Virtually all types of exercise and activities can also be protective, but moderation is best for long-term benefits, he said."
No comments:
Post a Comment