Al Ciampa
Level 7 Valued Member
I think we'd all agree that the MAF heart rate prediction is just that, a prediction, a guesstimate, and although I've not seen any science to either support or refute what I'm about to say, I think there is a significant amount of individual variability in this. Since the only way to test it would be very expensive and time-consuming, if it was possible at all, I say go with your gut as @Anna C has done. Your recovery, both short- and long-term, will give you clues as to whether or not you're keeping with the spirit of minimizing the use of the glycolytic system in your training.
JMO, YMMV.
-S-
And for whatever reason, we all keep forgetting about this... you very likely just do not fit int0 the predications of the formula. Everyone has to dial themselves in.