"ALGORITHMS: Physicist: steroid use can pop home runs 50%"

A professor in solid-state physics, who ordinarily studies subjects such as thin-film deposition on semiconductors, took some time off to study home run hitters who take steroids. The Tufts University (Medford, Mass.) professor's surprising finding was that the use of steroids that add just 10 percent to muscle mass would increase bat speed by only 5 percent, enough to raise a slugger's home run production by a surprising 50 percent.
Text: http://www.eetimes.com/showArticle.jhtml?articleID=201808181