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Re: lactate testing / training

Started by Warren · · Last activity · 1 post · 487 views

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18 July 2004
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Warren
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  1. Andy Coggan ([email hidden]) wrote:> > "warren"
    <[email hidden]> wrote in message > If your "one-size-fits-all"
    approach is truly the best YOU can

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    come up with then it's another indication of your lack of ability in
    this area.

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    If I'm so lacking in ability in this area, then why is it that I'm the only


    one who has formulated a cogent system for classifying workouts based on
    power that relies on one simple measurement?

    Because that method while that method is simple, it is faulty. It's suitable
    for many people who don't have the expertise or resources to get better
    information and many people will get suitable results by following your
    guidelines. Don't forget that CTS came up with a similar road test about 4
    years ago.

    I've provided examples in the past demonstrating that changes in LT power
    for example do not always change at the same rate (from training) as power
    at other intensities. If you derive your all of your training zones from
    power at one level (like 60-minute level) then your zones at other
    intensities may be wrong because it's very possible that your power at a
    different intensity has improved so much that the new zone should be higher
    than what you would calculate from your method. Or your power at one
    instiensity may not have improved much at all even though your LT power has.
    My own tests show these things and this would not be unusual for a person
    who is not training all training zones with realtively equal emphasis during
    a given period of the season.

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    (from training)Similarly, why is it that -


    without knowing a single thing else about you - I have previously been able
    to predict your OBLA power based on your normalized power from a criterium?

    That's not difficult to do because a person will tend to race with
    reasonable effort at their "normalized power". IOW, you do what you can do.
    There are races where I make more effort or less effort and the normalized
    powers from those races are not equal even though my LT power is unchanged.
    This is why I don't look at NP (criteriums and track). I look at other, more
    useful information about my exertions and responses during races.

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    For that matter, what about Per Elmsater's post earlier in this thread, in


    which he correctly estimated the average power you sustain during those 30 s
    on, 30 s off intervals, simply from knowing your OBLA power?

    Actually he was wrong about my numbers by quite a bit. I could also do those
    intervals at more effort than what I mentioned. Sometimes I'll aim for the
    top of a zone, middle of a zone, or lower part of a zone. It matters.

    Here's what he wrote...

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    Your Coggan levels would look like this at an LT of 330

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    L6 Anaerobic capacity 399 W and up Interrvals of 30 sec to 3 min on.


    app. 2 1/2 minute off

    399 and up? Way too vague to be useful. At 30 seconds on/off I'm usually
    near 500 watts.

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    L5 VO2 max 350-398 W 3-8 min on 2 1/2 - 5 min off. Preferably 2 1/2


    min off

    I don't do any intervals like these. I get lactate tolerance training from
    track racing and other intervals that I do that are not similar to these.

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    > How those zones are used is the training plan.


    Nonsense. That's like claiming that explaining to a non-English speaker


    the

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    difference between "left" and "right" is equivalent to giving them
    directions to their intended destination.


    Your version of the semantics, nothing more.

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    Okay then, wiseguy: without reference to ANYTHING other than the training


    levels I've described, tell us in DETAIL how you've been training for
    nationals. Again, no cheating by mentioning anything other than the power
    level(s) you've been training at.

    First, I don't think power zones are more useful than HR zones so I don't
    derive my training just from power zones. Second, there is too much detail
    needed to be complete in an answer-there are 5-7 different things I do each
    week and those aren't even all the same from week to week. Suffice to say,
    zones/levels based on HR, PE, and power are used with near equal importance
    (though usually not all three together) throughout a week and month. If I
    was only training for something like sprints or pursuit then the training
    would be more straightforward and simpler to describe. We can chat about my
    training details in CO if you like.

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    Less than
    optimal zones leads to less than optimal training plans.


    I'm afraid you've been hoodwinked, Warren: there is no difference


    between

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    training at, say, a few percent below your LT (or OBLA or whatever other
    metric you care to use) and a few percent above. Those that claim that
    "there's magic in them zones!" are just making it up.


    Right.... The results, lactate levels, and perceived exertion each show
    that you're wrong.

    Quoted message said:

    And how is that?

    Doing an interval at the high end of a zone (defined for example, by a range
    of ~20 watts or ~8bpm) feels different than doing the same type of interval
    at the low end of that range. Recovery to the next day will often be
    different. Ability to do other intervals in different zones or ranges later
    that same session or the next day can also be compromised.

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    His results show that his opinion about this is more accurate than


    your

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    opinion.


    "His results"? So Max was the one pedaling the bike, was he? ;-)


    Results of his guidance. From Hampsten, Armstrong, and Julich, to some
    Motorola, Mapei and US pros, to most recently Dario Cioni, Christine
    Thorburn, and myself on a lower scale, these are all examples of riders
    who improved significantly while receiving Max's guidance.

    Quoted message said:

    I knew that if I baited you that you would result to name-dropping and


    appeals-to-authority, just like many others do when they feel like they are
    losing a debate. I don't think, though, that you really deserve to list
    yourself in the same company as these other riders. ;-)

    These are all clear examples of actual results, including myself, of riders
    who have improved significantly. You can postulate all you like but the
    results show what the guidance provides.

    Quoted message said:

    I didn't say that 2b or 2a fibers were being recruited
    without any type 1 fibers.

    Quoted message said:

    Then what exactly did you mean by "...a curve that suddenly slopes upward


    (sudden increase in blood lactate at a given range of watts) indicates that
    type 2b fibers are now being utilized without an appropriate amount of type
    2a fibers being used first"?

    If the 1 and 2 fibers were able to produce more power the 2b's wouldn't be
    needed to produce the power at that power level and lactate levels would
    remain lower (until a higher power level was reached). If the ability of the
    2a fibers isn't good then there will be a steeper slope of the curve between
    when the 1 fibers can do the work and when the 2b fibers are now needed to
    produce the (higher)power.

    I've seen that people, including myself who have better ability with their
    2a fibers produce a more gradual slope of the lactate/power curve in the
    range near 2-3.5mMol. My own training has dramatically changed the shape of
    this curve. After my very first test with Max he referred to the problem
    with the steep slope as a "hole" in my ability that could be expected to
    make significant improvement, which it did/has. My power in this range
    increased siginificantly more than the amount of the increase in LT power
    during a 2-3 month period last year. Similar changes have occured in my
    ability between 1 and 2 mMol's earlier this year.

    Quoted message said:

    I said the contribution of 2a was not
    appropriate, or not enough before 2b was recruited. Certain training
    would improve the abilities of 2a fibers so that the use of 2b could be
    delayed or essentially not needed until the power was at a higher
    level.

    Quoted message said:

    "Certain training" would be essentially any endurance training.

    If "any endurance training" is good enough for you, fine, but more accurate
    training can be used for better results.

    Quoted message said:
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    > There
    > are many, many things other than fitness that influence the absolute


    blood

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    > lactate concentration at a particular exercise intensity, e.g.,


    blood

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    > sampling site/method, glycogen stores, nutritional state, etc.
    None of these factors has entered into the results I've been seeing in
    my tests. It's quite easy to account for these things anyway.


    Dream on: even if you have somebody do their last couple of workouts on


    an

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    ergometer at controlled intensities and feed them precisely measured


    amounts

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    of carbohydrate, you'd be lucky to keep glycogen stores in a +/- 10%


    range.

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    To think that you can control them adequately outside of laboratory so


    as to

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    be able to draw the sorts of conclusions you wish to draw is


    preposterous.

    Quoted message said:

    Again, so easy to see and account for, even for me. The results of the
    tests I've seen don't show the kind of abnormalities you suggest. You
    must be letting all those red herrings get in your way of seeing what's
    easily seen by others. Perhaps you're reading too much (for this
    application) into small increments or small differences in measured
    lactate.

    Quoted message said:

    Au contraire: it is you (and/or your coach) who is apparently reading too


    much into small, quite possibly random differences in measured lactate
    concentrations, and then using the data to based decisions about training
    upon.

    The amounts considered are not small. I would say that we look at
    differences of .3-.5 mMol. The curve shapes co-oincide with what could
    possibly be expected. Again, if there was some small factor that you keep
    trying to include that made my lactate levels .1 or.2 higher it wouldn't
    really matter because the shape of the curve would still be about the same.

    Quoted message said:

    Me, I say screw the lactate and focus on what really counts: actual


    function (performance).

    I've seen far more variablity in this method of evaluation than looking at
    performance AND lactate.

    How do you know when you need more, or less training of your type 1 fibers?
    When does this training need to be emphasized and when is maintenance the
    appropriate goal? How do you know if more, or less training should be done
    near 90% of LT?

    Quoted message said:
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    Always
    the earlobe,


    Is SaO2 measured to be certain that the degree of hyperemia isn't
    influencing the results? (Doubtful.)


    No influence, or so small as not to matter.

    Quoted message said:

    Blood lactate concentration varies slightly but significantly between


    arterial, venous, and/or arterialized venous blood, even when sampled from
    an inactive limb or bodypart.

    Nice to know but so what? I already said the blood is always sampled at the
    earlobe so the variations you just described don't affect the results.

    -WG

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