This month's Outside magazine mentions this on p. 120. It says "though it looks like a standard heart-rate strap, the Power Cal parses your heart rate and data from a 20-minute baseline test to extrapolate your power output. It's not as accurate as a hub-based meter, but at $250 it's poised to bring the technology to the masses."
I've been half-heartedly searching for a cheap PM. Is this any good? Couldn't you also do your own 20-min test and extrapolate your own power data? (IE, if HR = X yields Watts = Y, and there is likely some y ~ x formula, right?)
Reviews?
maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD
I've been half-heartedly searching for a cheap PM. Is this any good? Couldn't you also do your own 20-min test and extrapolate your own power data? (IE, if HR = X yields Watts = Y, and there is likely some y ~ x formula, right?)
Reviews?
maybe she's born with it, maybe it's chlorine
If you're injured and need some sympathy, PM me and I'm very happy to write back.
disclaimer: PhD not MD