Originally Posted by
vampares
Power output equals speed (for all intents and purposes) . To compare just do one ride and then the same thing again. If you are loosing weight, bring it with you. Overall it is a better measure of strength.
You'd really need a power meter if you were in danger of over extending yourself.
You've been here 4 years and apparently still don't know WTF you're talking about.
Maybe wait another 4 years and try again.