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Precisely. This is a traditional periodized plan at a low volume level, plain and simple. Some amount of time building aerobic base with all slow running, followed by a lot of speed to sharpen. As Magness pointed out, the Finns figured this out nearly 100 years ago and, at a much lower level, this is precisely what Lydiard prescribed.
I think this would be repeatable. If someone did the same study 6 months later, the results would be repeated. The question I have to ask Burfoot is why he thinks it's extendable. Just because people improve for 7 weeks, does that mean they will improve for 14 weeks? 28 weeks? This is the problem I have had with academic studies of training for years. Academic studies are designed nicely to fit in the academic calendar. This means they usually last about 6-10 weeks. These studies, not surprisingly, find that speed is good and base work is not nearly as good. The problem? They don't extend the studies long enough to know what actually works in the real world, where we have to think of months-long or, better, years-long progression.