AnT decreased

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  • #44793

    Hi guys,

    I started training according to the two books in April 2019. My AeT was at 153 and my AnT 179. Ever since I just did Z1/2 training. I now retested my AnT and figured out that my AnT decreased to 171. My AeT atm is 160. At least that is what I thought.

    Two questions:
    – given that little spread between AeT and AnT, I’m not sure how reliable the drift test is, since AnT is probably ceiling my drift, right?
    – Is this significant decrease in AnT how it is supposed to be?

    Training background:
    I introduced Z3 intervals lately since I want to participate in an uphill race (so far just had been training for mountaineering and ski mountaineering at 145bpm or lower).

    Best regards

  • Inactive
    Anonymous on #44796


    If you are spending the vast majority of your training time in Z1-2 then your AnT will drop during this period of aerobic base building. You are not stimulating the higher intensity metabolic pathway if you are exclusively trying to cure aerobic deficiency. This is why we call this period the BASE phase.

    The AnT will respond much faster to the Z3 workouts you are beginning to do now that you AeT has done to improving AeT. The 2 systems while inter-related still respond to different stimuli. Recall from the books that improvements to the anaerobic metabolic turn over are largely enzymatic so happen fairly quickly.

    Are you sure you conducted the AnT test on a day when you were well rested? If you’ve begun to do more Z3 training it is possible that you might be carrying some fatigue in your legs and that will greatly affect the AnT test. The AeT test is less susceptible to specific leg fatigue because the intensity is lower.

    you should still be able to use the drift test reliably despite the smaller spread between thresholds.


    Dada on #44803

    Hi Scott,

    Thx a lot!

    Re your question:
    I think I was fairly rested. Had 3 three restdays prior to the test, although before the restdays I came back from 6 days of guiding. I have been doing the Z3 after the AnT test.

    Best regards

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