Originally Posted by
Sy Reene
So from an efficiency standpoint, I think (?) it's generally agreed that there is a range of cadence that is generally considered to be optimal (eg. somewhere between 80-95 for argument's sake.
The lower side of your range is generally where power comes from - more muscular activitity such as time trials. The higher end is more aerobic where efficieny comes in play. So it's good to train both.