There's technique and strength. Technique, at a certain level, determines your ultimate potential. So does genetics and training, but it's a multiple variable thing.

If you ride rollers and get good technique, great technique, you max out one variable. Then you can focus on other things.

If you have bad form, you could be handicapping yourself. It's relative to ability - no one will accuse Delgado or Tyler Hamilton of having smooth form - but if you're chopping at the pedals, you can probably do better.

So rollers (with no resistance) don't affect power. It's a good tool for form. Use it for form.

cdr