Dgbkotdc wrote:
To say that moderate pace running does not produce specific, desirable adaptations is simply not true. Our thinking has become dominated by this idea of zone training but in reality aerobic benefits apply across a spectrum of paces.
I appreciate the thoughtful responses from everyone.
So let me focus on this thought for a second. There are undoubtedly benefits across the whole spectrum of paces, and Daniels says as much in his books. But he advocates for focusing on particular points in the spectrum in order to maximize the benefits you get from training, then he goes into the physiology of each key training pace.
Easy pace develops stroke volume, mitochondrial density, etc.
Threshold pace teaches your body to manage lactate.
Although he doesn't give a good reason for marathon pace, other than "I've seen good results from using it." This is in the 2nd edition. But obviously it's important for specificity in marathon training, so we'll assume it's a key pace considering the topic of the thread.
So since some have rightly pointed out that this question depends a bit on the runner in question, let's reframe the it for a runner who does 5:10 threshold pace, 5:30 marathon pace, and 7:00 easy pace. That would peg moderate pace somewhere between 5:30 and 7:00 (since it's not really well defined).
What are the specific benefits achieved by running 5:40-6:20 pace that aren't achieved by the other paces?
It sounds like some are suggesting there are gains to be made that aren't achieved by focusing on the key training paces.