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50% more Home Runs with 10% More Muscle September 25, 2007

Posted by tkcollier in In The News, Science & Technology, Sports.
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Tufts E-News: Study: Steroids Can Power Home Runs
Tufts physicist Roger Tobin found that increased muscle mass that can be generated by steroid use could help batters knock 50 percent more baseballs out of the park.

The 10 percent increase in muscle mass helps a batter swing five percent faster, increasing the speed of the ball leaving the bat by four percent. This extra speed, applied to a model distribution of trajectories, could result in 50 percent more home runs, Tobin found.

For pitchers, the results are good but less sensational: pitch speed can increase by approximately five percent, or four to five miles per hour, for a pitcher who throws a 90-mile-per-hour fastball, dropping his earned run average by a half-run per game, Reuters reported.

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