VO2 Max should feel harder than this

[old_but_not_dead_yet]

@ilanpsi

Sorry to inform you that this is exactly wrong. 30s/30s intervals are the VO2 Max protocol recommended by exercise physiologist Veronique Billat who has numerous scientific articles on VO2 Max. For this reason they are often called Billat intervals. As I understand it, this protocol allows you to stay longer at VO2 Max, so is more beneficial in raising VO2 Max than other methods. You can find her scientific articles by doing a search.

30/30s can work as long as the intensity is high enough (which isn’t true of Taylor -2, especially the rest periods). The bolded part above is still just speculation, however.

ETA. To better mimic Billat’s protocol, the intensity of the rest periods should be 60% of FTP, not 40%.