I appreciate the input everyone, though it is interesting that people have quite different interpretations of the data. I have 4 years of training using TFTNA fundamentals currently on the 5th! I’m sure in some of the early years that targets were not set correctly, but volume has been consistent throughout, and I’ve been right on track the last couple. I have read and believe I understand most of the great articles and information that the guys/gals have put out.
My nose breathing is steady through the mid 150’s bpm when properly warmed up. Getting to 50/50 Carb/Fat calories at AeT takes some time. I can see improvements but still a ways off. So many different ways that people seem to set AeT; 50/50 crossover, lactate 2.0, percentage of AnT, nose breathing?
The CU lab sets target goals for future training where they believe the HR/Lactate curves need to be smoothed out. Often well below their perceived AeT. The lower HR’s for improved Fat burning/the upper AeT HR’s for increased mitochondria volume/lactate metabolism.
But if anything, I am a poster child for having a relatively low VO2, but still seem to get by. CU recommended a small amount of HIIT to improve the engine size as well.
Any comments from the coaches?