by PhilBixby
Fri Jan 11, 2008 10:45 am
The 3min intervals that I do with proper recovery inbetween are aimed at VO2max, and I aim to get well above my threshold at the end of each - say 180+ (threshold is 172ish). The crisscross threshold one is different in that you don't get proper recovery but you don't go all-out either - so I'm aiming to vary HR between about 165 and 177. If there was proper recovery inbetween, the intervals probably wouldn't do a lot, but the constancy of effort makes it useful in improving power at / raising LT. At least, that's my reading of it!