I've just finished reading Healthy Intelligent Training by Keith Livingstone and I have a couple of physiological questions about the Lydiard training principles that I hope some of you can help me answer:
1. The book mentions that max VO2 intervals are anaerobic work and that anaerobic work tends to "sand down" the aerobic work and should therefore not be done during the base training period. What does it physiologically mean that anaerobic work sands down aerobic work? Should I, as an 400m/800m runner, avoid doing any max VO2 work during winter in favor of building aerobic capacity other ways, like shorter intervals at lower intensity or marathon pace running? Are there examples of athletes that has done max VO2 work year round and succeeded?
2. The strength training mentioned in the book favors very heavy weights and few repetitions in order to recruit type 2b ft muscle fibers that don't increase muscle volume as much as oxidative muscle fibers like type 1 or type 2a. First of all: What's even the point of trying to obtain a lot of type 2b fibers? I know that they are the most explosive kind of fibers, but aren't they so explosive that they only handle a few repetitions before they're finished? Please correct me if I'm wrong, but doesn't that mean that (if you have a lot of ft 2b fibers) when you come into the final 100m of a middle distance race and you try to accelerate then you will be able to sprint for about 20m before tying up because the type 2b ft fibers are exhausted and useless? Wouldn't an athlete be better off with strength training that has more focus on light weights and many repetitions to build both strength and endurance (recruit type 2a and type 1 fibers)?
In advance, thanks for all answers