Originally Posted by
koala logs
The other riders are trying to maintain constant power output which should be the same thing you're supposed to be doing unless you're doing some sort of interval training.
It can be sustained power output if you're going round and round that circuit at constant power for more 15 minutes without stopping. It doesn't matter if the road pitches up or down especially if the gradient is not too big and you can still pedal and apply power on the descents. Training will definitely help in that case.
Apparently, according to one of the other posters, I probably am doing interval training, to a degree, without really trying to. Will try to be more even on one of my laps after work today.