Originally Posted by
rubiksoval
There's a whole lot of effect to be gained from appropriate work in zone 3 and sweetspot. And it's certainly not easy. Building up to an hour+ continuous at sweetspot (with power) is a helluva workout.
SST meaning ~90%-95% LT? Yes, absolutely. One of my fitness tests is to do an hour's pass climb at ~3 beats off LT. Of course then I'm not good for that much, but that's OK. Builds character. If I were doing that with power, I'd have to start at a lower intensity. IMO that's still an interesting discussion.