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LT number

Old 06-01-07, 11:13 PM
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LT number

if i know my resting heart rate is 56bpm and my max is about 196bpm...how do i find my lactic threshold?
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Old 06-01-07, 11:32 PM
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https://www.bikeforums.net/training-nutrition/43102-2x20-anaerobic-threshold-test.html
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Old 06-01-07, 11:33 PM
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There are many definitions for "threshold" in addition to methods used to find your training zones. One method that I've heard works well is to do a 20 minute time trial with a hard sprint at the end. Your average HR over the last 15 minutes is supposed to be a good indicator of your threshold HR. The max that you hit in the sprint is a good indicator of Max HR.

What I'm unclear about is what this HR is supposed to represent exactly - HR at FTP (functional threshold power), MLSS, lactate threshold, or something else.
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Old 06-02-07, 01:02 PM
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ok, i did the tests and found that my LT is 170bpm...thats 80% of my heart rate...is that good?
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Old 06-02-07, 01:07 PM
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Originally Posted by Plow13
ok, i did the tests and found that my LT is 170bpm...thats 80% of my heart rate...is that good?
It doesn't really mean anything.

Use it for training, not for quantifying your abilities.
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Old 06-02-07, 02:06 PM
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well for training, do i want to keep it under that number or try to go above it?
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Old 06-02-07, 04:32 PM
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Originally Posted by Plow13
if i know my resting heart rate is 56bpm and my max is about 196bpm...how do i find my lactic threshold?
Lactate threshold is a power, VO2, or intensity. It is not a heart rate. However it is defined, LT can be determined only by drawing blood and measuring lactate concentration.
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Old 06-02-07, 04:43 PM
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Originally Posted by Plow13
well for training, do i want to keep it under that number or try to go above it?
Intervals should be above LTHR. Search for "intervals" in the forums... then do some every week.
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Old 06-02-07, 10:04 PM
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Originally Posted by Plow13
well for training, do i want to keep it under that number or try to go above it?
How you train is complicated. Go buy carmicheal's book or Friel's book.

But very simply, if you are working on your base (aerobic) system, you stay underneath it a fair bit, if you are working to improve your ability to deal with lactic acid, you ride near it, and if you're working on anaerobic power, you work out as hard as you can.

But how you mix them depends on your goals and how you're training.
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