>> Wikipedia claims it has no scientific basis.
> 
> I'm guessing the American Heart Association wouldn't make charts on 
> their site if they had no scientific basis at all.  It's also what my 
> doctor told me. So....

Yeah, surely Wikipedia is more authoritative than the American Heart 
Association.

(Then again, I get the distinct impression that maximum heart rate 
varies wildly from person to person, so just about any formula is only 
ever going to be a very rough estimate. Short of actually *measuring* 
your maximum heart rate, that is...)

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

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