I did Bluebell yesterday. This is 3x6 1 minute VO2 intervals with 1 minute recoveries in-between. While the minute efforts felt tough on my legs it wasn’t hard and I could have comfortably done at least another set, and my breathing and HR never really elevated maxing at 149 over the whole workout which is ~78% of my max HR.
Given that my HR never got near VO2 max range (in fact is still just in z2 according to Joel Friel’s threshold calculated zones), do I need to consider increasing the % effort for VO2 workouts?
My FTP feels right having tested last week, and for longer threshold intervals it always feels like I’m clinging on at the end, but VO2 ones generally feel very doable.
- riding on aero bars on a TT bike (in case that makes any difference)
- Max HR 190
- Resting HR 54
- FTP 217