Heart Rate during IM

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2009-09-17 10:32 AM

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DC
Subject: Heart Rate during IM
I watch my cadence (shoot for 90-100) but don't have a power meter. For the bike leg of my first full IM, I'll be focusing on maintaining my heart rate below 80%. Is this still too high? What percentage would you pros recommend? I don't trust my self-perceived effort & boy do I want to participate & finish w/a sincere smile on my face.

Thanks for your input.

2009-09-17 12:25 PM
in reply to: #2411611

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Not a Coach
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Subject: RE: Heart Rate during IM
80% of what?

You should likely be targeting z1/z2 for the entire day.  It should feel VERY easy, especially early in the bike.
2009-09-17 2:04 PM
in reply to: #2411611

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Champion
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Subject: RE: Heart Rate during IM
Porfirio - 2009-09-17 10:32 AM

I watch my cadence (shoot for 90-100) but don't have a power meter. For the bike leg of my first full IM, I'll be focusing on maintaining my heart rate below 80%. Is this still too high? What percentage would you pros recommend? I don't trust my self-perceived effort & boy do I want to participate & finish w/a sincere smile on my face.

Thanks for your input.


If you mean 80% of max HR, no. That's what I do but not what you should. Think more 65-70% unless you are an extremely well trained athlete.
2009-09-17 3:14 PM
in reply to: #2411611

Iron Donkey
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Subject: RE: Heart Rate during IM

Find out what your MAF and HR Zones are, get a HR monitor, and train with it.  You'll be glad you did.

2009-09-17 9:39 PM
in reply to: #2411611

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Champion
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Subject: RE: Heart Rate during IM
In my first (and only) IM I was at around roughly 75-80% of my LTHR (probably around 70% of Max HR, though I don't know with any reasonable precision what my Max HR is), and that worked out pretty well.  This is partially guessing, since conditions during my race were very different from (=much cooler than) conditions during testing and training (which is something to bear in mind,...)
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