Masters' swimmers have been proving it for years and Dara proved it with an exclamation point in Beijing that you can go faster at 40-something than you did at 20-something. As someone 15 days older than Dara, what I wonder is this: At what age will the aging process take over and, despite whatever training you do (& without resorting to drug enhancements), you will slow down?
I believe if you combine the base you achieve with many years of age-group swimming with some maturity of early adulthood (and of course dispose of the world's view--and your spouse's/children's view--that you need to get on with your life) 25-29 would be the peak.
I believe if you combine the base you achieve with many years of age-group swimming with some maturity of early adulthood (and of course dispose of the world's view--and your spouse's/children's view--that you need to get on with your life) 25-29 would be the peak.