GH, lactate, etc.
Lactate is generated during high-intensity work because of anaerobic glycolysis. Lactate is cleared by non-working muscle, the liver, etc. because it is converted back to pyruvate, then enters the Kreb's cycle to produce NADH, then ATP aerobically. I have no clue how it burns fat. Can't think of any biochemical pathway. Some used to think that lactate stimulated GH release, but it probably had more to do with the stress of high-intensity exercise that caused both. Actually, lactate is cleared fastest if high-intensity work is followed by very low intensity work vs sitting on a bench. Ever wonder why running backs and wide receivers ride a bike on the side lines after running 99 yds with the ball?
Regarding GH. Think about this. If the amount of GH that is released during high-intensity exercise, which is really a fraction of the daily GH release in a normal person was responsible for all this fat loss that everyone talks about, then why not just inject a small amount of GH to get the same result? For those that have used GH (comments are welcome here because I'd like to know what's going on out there), it takes more than a replacement dose of GH to have an ergogenic (performance enhancing) effect. That is why I don't believe the GH release that the body produces as a function of exercise can have such an effect, because if you injected the same amount, you would get shit. It's the metabolic consequences of high-intensity, interval training, not GH. Now, that's not to say there isn't a synergistic effect, but the GH release alone isn't going to do much.
W6
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