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insulin spike?

 
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strohls freely
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Joined: 11 Mar 2005
Posts: 117
Location: Austin

PostPosted: Mon Mar 21, 2005 3:56 pm GMT +0000    Post subject: insulin spike? Reply with quote

Hi Doc,

Here is the setting:

I am riding endurance miles on a flat 10 mile loop. My heart has been pegged at 145bpm for about a hour and a half (this is approx. 90% of my L.T.). I reach down and take a swig of my homebrew (24oz. water and 2tbs of molassas). What seems to be a few seconds later, my heart feels different, just different, I look at my rate and it is 154, 158, 165, and then up to 179 in just five or less seconds. During this spike, I am mashing on the brakes so as not to become a smear on the asphalt just in case my ticket is about to expire. But then it is over. Back to normal. I ride for another hour with no problems.
My heart never hurt or anything, I just felt it race.
Was this an insulin spike? What was it? . . . ?
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xl_cheese
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Joined: 01 May 2003
Posts: 223

PostPosted: Mon Mar 21, 2005 4:33 pm GMT +0000    Post subject: Reply with quote

could be your HRM. Mine shoots up over 200 sometimes in the wind.
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Anonymous
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PostPosted: Mon Mar 21, 2005 4:58 pm GMT +0000    Post subject: Reply with quote

That is not an insulin spike. 5 seconds is not long enough to get anything from your gut to your bloodstream and for your body to react (by releasing insulin). Also, an insulin spike and a HR spike are not generally related.

If it is windy it could just be your HR monitor giving the bogus readings.

Paul
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Anonymous
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PostPosted: Mon Mar 21, 2005 8:11 pm GMT +0000    Post subject: Reply with quote

Or it could be that the extra effort it requires to reach down to grab your bottle, raise it overhead to drink, then put it back, is what temporarily spikes your heart rate.
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The Bike Doc
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Joined: 08 May 2003
Posts: 1371
Location: Corpus Christi and Warda, Texas

PostPosted: Wed Mar 23, 2005 8:58 am GMT +0000    Post subject: Reply with quote

strohls freely:

ciclista & PaulBurpo are guiding you correctly. It is way to fast for an insulin spike, it is more likely the increased muscle activity and mental conentration to get the water bottle out and to drink. Try using a hydration bladder such as a CamelBak.

Thanks,
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Paul K. Nolan, MD
AKA: The Bike Doc
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