Originally Posted by
woodworker
I've had one now for a year and a half. It's a powertap, so not very expensive. It's hands-down the best expenditure I've made to improve my fitness. I don't think that you need a coach but do need to read up on how to interpret the data, and to analyze it you will need to go on Garminconnect at a minimum.
The most important point is to establish your FTP, then tailor your workouts to that. I do hill intervals in the 8-10 minute and 20 minute ranges trying to keep my power in a zone around FTP. Like most things, you can get 80% of the results from power from some pretty simple analysis, but the remaining 20% requires a much deeper analysis and training regimen, and probably a coach.
Put simply, there isn't a purer measure of the work that you're doing than what is provided by a power meter. And it also means that you get maximum benefit for the time that you put into your workouts. I think that it's essential for the time-crunched cyclist. Perhaps less so for those who have more time.
Sorry for the long response. Hope it helps.
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