Originally Posted by
R. D.
It's not measured in time, but level of effort that requires an adaptation from your metabolism to burn more sugar than fat (again, that's by definition zones above Z 2, and why would you do 1 second high intensity anyway that doesn't make sense at all)
Read my previous post again, if you do high intensity efforts, you enter zone 3, zone 4 or more, then you are off zone 2 for a while!
https://link.springer.com/article/10.1007/s00421-025-06006-7
" Conclusion
A 3MAOT performed
during an endurance-based training session did not alter metabolism or perceived exertion, nor did it affect delayed exercise capacity beyond the effect of the 3-h prolonged exercise itself.
There appears to be no physiological basis for the strict exclusion of short, high-intensity bursts during endurance training."
(Also:
https://pubmed.ncbi.nlm.nih.gov/40623686/)
Last edited by RChung; 10-17-25 at 09:13 AM.