At 91, Olga Kotelko may be the world’s fastest, oldest athlete. The New York Times magazine reports that at last fall’s Lahti championship, Kotelko threw a javelin more than 20 feet farther than her nearest age-group rival. At the World Masters Games in Sydney, Kotelko’s time in the 100 meters  23.95 seconds  was faster than that of some finalists in the 80-to-84-year category, two brackets down. World Masters Athletics, the governing body of masters track, uses “age-graded†tables developed by statisticians to create a kind of standard score, expressed as a percentage, for any athletic feat. The world record for any given event would theoretically be assigned 100 percent. But a number of Kotelko’s marks  in shot put, high jump, 100-meter dash  top 100 percent. How does she do it? The researchers who are trying to figure it out believe that exercise is a big part of it. The Times reports that two recent studies involving middle-aged runners suggest that the serious mileage they were putting in, over years and years, had protected them at the chromosomal level. It appears that exercise may stimulate the production of telomerase, an enzyme that maintains and repairs the little caps on the ends of chromosomes that keep genetic information intact when cells divide. That may explain why older athletes aren’t just more cardiovascularly fit than their sedentary counterparts  they are more free of age-related illness in general.
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