About 50 million people in the United States suffer from arthritis, according to the Centers for Disease Control and Prevention in Atlanta.

Regular exercise can be beneficial to people with rheumatoid arthritis, but a study finds that two out of five people with the disease may not be active at all.

Regular exercise can be beneficial to people with rheumatoid arthritis, but a study finds that two out of five people with the disease may not be active at all.

I#39;d spent the September weekend playing two doubles tennis matches. When I went back to work on Monday, my left knee locked up and hurt when I got up from my desk. Walking down stairs brought on the same symptoms. The pain was mild and brief, but bothersome, nonetheless. I#39;d never had a sports injury in 35 years of playing tennis and had been proud of that fact.

(ARA) - When it comes to fighting arthritis, there's no arguing with the axiom move it or lose it. Movement and physical activity have been proven effective in relieving arthritis pain and, in some cases, delaying the onset of symptoms.