Word: runner
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...second study in the same journal, researchers at Iowa State University used computer modeling to figure out how the length of a runner's stride might change the force applied to his or her bones and thereby affect the risk of stress fractures. Researchers recruited 10 male participants, each of whom typically ran about three miles per day, and calculated their risk of experiencing a stress fracture - about 9% over 100 days. By observing the participants running at varying stride lengths and recording the amount of force their foot strikes exerted on the ground, researchers were able to estimate...
Perhaps because it seems intuitively true, the notion persists that running, especially when done long-term and over long distances, is bad for the joints. Indeed, it would be hard to think otherwise when with each foot strike, a runner's knee withstands a force equal to eight times his or her body weight - for a 150-lb. person, that's about 1,200 lb. of impact, step after step...
...year, Australian researchers writing in the journal Arthritis and Rheumatism found that people who exercised vigorously had thicker and healthier knee cartilage than their sedentary peers. That suggests the exercisers may have also enjoyed a lower risk of osteoarthritis, which is caused by breakdown and loss of cartilage. (Read "Runner Trend: Going Barefoot...
...Person of the Year 2009 runner-up Usain Bolt...
...House is now working to reassure him the deadline is not a hard one. Still, Graham is encouraging his colleagues to sign on. "I hope that Republicans can see fit to support the President's surge," he says. And most do. (See pictures of Person of the Year 2009 runner-up Nancy Pelosi...