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Adrenaline and MHR

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Adrenaline and MHR

Old 11-06-05, 11:03 AM
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Adrenaline and MHR

About two months ago, I was trying out my Supergo wireless HRM/Cyclocomputer during an interval-type outdoor ride. I was in the recovery period going down hill after spending the previous 6 minutes at 180-186 bpm going up that hill. It was supposed to be my reward but instead I was chased by a dog at one point of the recovery for about a half mile or so (or at least I rode it that way). After I was sure that the dog was no longer behind me, I checked the HRM and saw my speed was at 29.5 mph and my HR was at 192. I'm a 31 year old male at 160 lbs. If I use this equation:

MHR = 220 bpm - (age/2) - (5% body weight) + 4 (for men only)

I come up with 200 bpm for my MHR. So now for three (or more) questions...

1). Can 192 bpm be my MHR or does the "fight or flight" response do something to skew that number? I felt pretty wiped out. I don't think I could have spoken more than two words at a time and basically "recovered" rest of the way home.

2). Do I coun't myself lucky for the opportunity to have had a monitor on during all this? I really just started to research training and heart zones so now I wonder if I still have to do all the field tests to come up with some number or is this number valid for training purposes?

3). Do I get mad at the owner for not having the dog on a leash or do I get mad at my self for not having dog treats aboard? It really was a beatiful Golden Retriever! The whole incident was kind of funny because I was still a ways off from where the dog was when we both acknowledged one another and the chase began. The canine version of the Knave, perhaps?

Thank you for your time!

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Old 11-06-05, 11:41 AM
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Adrenaline can't make your heart beat any faster than it is capable of. 192 seems like a good number.
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