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Old 08-17-04, 05:40 AM   #1
Big R
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Calling HRM gurus

So I've been using a HRM for a few months now...I have an observation and a couple of questions.

(1) As best I can tell I have a max HR of 186 or so. (Calculated, and actual observation bears this out). I typically ride at about 158-160 bpm comfortably for as much as 1.5 hrs. Last weekend I did a long ride...about 110 the first day, and 80 the second day. Day 1 I was frequently going along at 165-167 bpm for extended periods with no ill affects. And no problem from a recovery standpoint on Day 2. Why could I go at a higher bpm for longer times than I typically do on training rides? Does adrenelin really help that much?

(2) I use Polar M62 which has the "FitTest" feature....wahoo, it must be good! So I've been using it regularly as directed (same time every test, relax before, etc.), and I get very consistent numbers saying I'm a 54. I am 41 yrs. old and have it set to "HIGH" activity level. So last week I set up User Profile #2 with all the same info, except "TOP" activity level. Consecutive test yielde 54 for User 1 (as expected), but a whopping 63 for User 2. So what's going on w/the test? I thought the test would yield a LOWER number if it thought I was a "TOP" activity person, but it yielded a HIGHER number. Anyone know what's going on here?

Thanks for indulging my goofiness.
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Old 08-17-04, 06:52 AM   #2
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At a higher activity, TOP, you will have a higher VO2 max, which is why you got a higher value. The OwnIndex is a presumeably accurate value of your VO2 max.
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Old 08-17-04, 11:24 AM   #3
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On long rides there is an effect called cardiac drift where your heart rate increases slightly for the same level of output. Perhaps this is what you experience on your long rides. A 5-7 bpm drift seems about in line with what I experience.
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Old 08-17-04, 12:18 PM   #4
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Quote:
Originally Posted by supcom
On long rides there is an effect called cardiac drift where your heart rate increases slightly for the same level of output. Perhaps this is what you experience on your long rides. A 5-7 bpm drift seems about in line with what I experience.
I see this too, but didn't know why.
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