Ok, I'll jump in this discussion.
This year my goals and training program have changed considerably from last year. I began cycling last May after a decade of no exercise and a sedentary yet stressful life of working in corporate America for "the man". 😠 After being laid off, downsized or outsourced a half dozen times I decided it wasn't worth the aggrivation so I quit work and started exercising again.
Last year I was into the 5 & 10 mile time trial type thing and was pushing most of my rides into the upper zones frequently hitting 90%+ of MaxHR. Most of these rides were around 45 minutes in duration. However, this proved for me (age 43 at the time) to be too taxing, especially when considering I hadn't done ANY base training. I was using the old bodybuilding paridigm of "no pain, no gain". While that may be fine for bodybuilding, it did more harm than good in the long run. It seems as though I had quite a few respritory problems due to this type of training and my knees ached constantly. Go figure.
This year, however, is quite the opposite of last year's goals and training regimen. I have exercised for a full year now, with the exception of respritory problems and a couple of months this winter after my father passed away, and am doing quite a bit more training in my 65% - 75% MaxHR zones.
I spent Jan & Feb indoors on a stationary bike doing 65% to 70% for about an hour while watching TV. However, when it finally got warm enough to get outside on a real bike I found I was not able to keep my HR that low. On the bike I find myself riding mostly around 76% MaxHR and occasionally (once a week perhaps) just under 80% MaxHR. I'm now up to 90 minutes for my daily rides and 2 Hrs 15 min for my once a week longer ride. I'm now adding 30 minutes per month to my daily rides and 10% a week to my weekly longer ride. By July 2nd I should be up to 5 hours for my long ride.
I usually ride 3 days on and 1 day off. I'm 44 now and find that 6 days in a row is too much for me so I split it up. I would like to be able to do a century per month beginning perhaps in July. I don't ride very fast as compared to most of you guys, but I also weigh 243 LBS (Clydesdale!). Although losing weight would help speed me up (strength to weight ratio) I find that if I reduce my caloric intake I get light headed and my exercise suffers so I eat as much as I feel like. Actually, I've gained weight since last year due to riding and lifting weights while my bodyfat percentage has decreased. This isn't something a person wants to do if they race but I like having 18.5" biceps! 😄 I'm certain the subcutaneous fat will melt off when I am up to 2.5 to 3 hours a day of training.
Ric Stern actually has a pretty good prescription for those who train by heart rate. He has posted it on this forum before so I hope he doesn't mind if I post it again. It's a good read.
http://www.cyclingnews.com/fitness/?id=powerstern
I would like to say that I've learned a great deal about cycling, training and exercise phisiology in general by reading the posts in this forum. Just remember that my goals are not your goals and that you should gear your training toward what you wish to accomplish. Also, if you're getting a little older, don't be ashamed that you can't mash the pedals like you used to. I used to bench press just over 400 LBS. twenty years ago. However, that isn't me anymore. Even half of that would cause a shoulder injury now.
I think a number of people read articles about what Lance Armstrong or some other great champion is doing and they try to mimic his regimen. However, he has an army of people working with him and besides there are only a few hundred people in the world tops with his kind of genetic potential. I've been guilty of it too when I used to copy Arnold Schwarzenegger's routine. Believe me, unless you are a genetic freak (or on steroids), it's overkill.
Doctor Morbius