Well, sure....
First a little background on me, I'm 55, 6'2" 160lbs. Been riding hard pretty much for 30 yrs. Used to race occasionally in the 80's but now I stick with the fast club rides. I can hurt lots of younger guys on the climbs, but they frequently pay me back on the flats.
A few things I have noticed in my riding as time marches on:
I feel as strong as I did years ago but now if I dont get a good warmup in I have nothing at all. When I was younger, I could pretty much leave the house in a sprint and just keep going.
I dont think my max power output is what it used to be, not surprisingly but my steady state power feels as good as ever. Not sure because the powertap hasnt arrived yet
Surges in the group hurt more than they used to.
Nutrition is WAY more critical to my riding now than it used to be. Back then I would make a half hearted attempt to eat right but it didnt really seem to matter much to my performance. Now, if I dont get my intake exactly right it has a huge effect on my riding.
Now of course, these issues apply to all riders regardless of their ages, but it seems to me that the older folks need to be much more particular because there is evidently less margin for error in nutrition, training, etc.
I for one would like to hear from guys like myself on what/how they do it.