Participants in the senior olympics have fitness age 25 years younger than their chronological age.

I have previously mentioned the fitness age calculator developed by reserarchers at the Norwegian University of Science and Technology in Trondheim. Gretchen Reynolds now does a piece on a study that has looked at the results obtained when more than 4,200 participants in this year's senior olympics in Minneapolis-St. Paul used the online calculator to determine their physiological age (which predicts longevity and general vitality with aging). The striking result was the athletes, whose average chronological age was 68, had an average fitness age of 43, a remarkable 25 years less. Here is the link to the calculator, if you are curious to try it on yourself. (I couldn't resist doing it again for myself. I'm 73, and the calculator is kind enough to tell me I have a fitness age of 53.)