Getting Better With Age: Dive In - NYT

DARA TORRES, the 41-year-old Olympic swimmer with the impossibly chiseled abs who collected three silver medals in Beijing, has proved at the elite level that getting older doesn’t mean getting slower in the water. But put her aside for now.
Researchers at the Counsilman Center for the Science of Swimming at Indiana University found that the population of Masters swimmers (made up of 42,500 members ages 18 to 100-plus) has gotten faster over the last 20 years in age groups from 25 to 55, said Joel Stager, the center’s director.