Originally Posted by
hamster
Hmm. How about just below LT, day within 10 bpm? I would have to get out of my way just to cut higher intensity time to 2 hrs/week. It's mostly hills here, perhaps two thirds of my riding is uphill (time wise), and even moderate effort gets me within 5-10 bpm of LT.
That's an extremely beneficial training intensity. See here:
http://www.fascatcoaching.com/sweetspottraining.html
To be honest, I've never seen a compelling, science-based argument to support the traditional high-volume, low-intensity approach. Granted, many pros supposedly train that way, but their conception of "high-volume" is very different from ours