Thursday, July 31, 2014

Running 5 Minutes a Day Has Long-Lasting Benefits

By GRETCHEN REYNOLDS, NYT
July 30, 2014 3:21 pm

Running for as little as five minutes a day could significantly lower a person’s risk of dying prematurely, according to a large-scale new study of exercise and mortality. The findings suggest that the benefits of even small amounts of vigorous exercise may be much greater than experts had assumed.

In recent years, moderate exercise, such as brisk walking, has been the focus of a great deal of exercise science and most exercise recommendations. The government’s formal 2008 exercise guidelines, for instance, suggest that people should engage in about 30 minutes of moderate exercise on most days of the week. Almost as an afterthought, the recommendations point out that half as much, or about 15 minutes a day of vigorous exercise, should be equally beneficial.

But the science to support that number had been relatively paltry, with few substantial studies having carefully tracked how much vigorous exercise is needed to reduce disease risk and increase lifespan. Even fewer studies had looked at how small an amount of vigorous exercise might achieve that same result.

So for the new study, published Monday in The Journal of the American College of Cardiology, researchers from Iowa State University, the University of South Carolina, the Pennington Biomedical Research Center in Baton Rouge, La., and other institutions turned to a huge database maintained at the Cooper Clinic and Cooper Institute in Dallas.

(More here.)

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