I've never even heard of pedaling dorsiflexed. It's pretty obvious why that would lead to a reduction in power and stress on the calves.
Most people have much more of a problem with plantar flexion. There are historically two schools of thought on "ankling," or using your calf muscles to pedal by bringing your toe up and down through the pedal stroke. Keeping the ankle fixed is definitely more popular nowadays, but I'm not familiar with the science behind it. Googling yields some interesting discussions though. The gist of most of them is that ankling is an "urban legend" with no scientific support behind it, and that it can lead to injury.
Last edited by OakLeaf; 02-25-2010 at 07:54 AM.
Speed comes from what you put behind you. - Judi Ketteler