Reaching HR max @ VO2 max

[AJS914]

I’m pretty sure 90% is what I’ve heard Seiler say many times. I couldn’t find it googling but I did find this:

https://www.researchgate.net/publication/46403553_What_is_Best_Practice_for_Training_Intensity_and_Duration_Distribution_in_Endurance_Athletes

There is a chart in there showing %HR and %Vo2 and time in zone for intervals.