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Unusual Anaerobic drop

Azo

Overnight the anaerobic value under the Load Focus dropped from 1426 to 779.

This is highly unusual and it does not have any logic. It should be a glitch in the software. I use this app for over 4 years and I never recorded such a huge drop.

Is there any explanation, did it happen to other users?  

  • 0
    Azo said:
    Overnight the anaerobic value under the Load Focus dropped from 1426 to 779.

    On the web only, or on the watch too? When you go to the Training Status report at https://connect.garmin.com/app/report/-1/all/last_four_weeks, and click on the link 'Activity List' under the Exercise Load chart, are all activities listed there, and do their load values match?

  • 0 in reply to trux

    Everywhere, in the watch, on the web and on the Connect App.

    Just to be clear:

    Aug 9, Training Load 824 / Load Focus: Anaerobic 1426, High Aerobic 729 and Low Aerobic 976

    Aug 10, Training Load 757 / Load Focus: Anaerobic 779, High Aerobic 576 and Low Aerobic 960

    All the other drops are in normal range. Anaerobic drop from 1426 to 779 is not unusual only, it cannot be true.

  • 0 in reply to Azo
    Azo said:
    it cannot be true

    Why exactly do you think so? The Exercise Load can be completely different every day. You can have one day zero anaerobic load, and another day a thousand or more, depending on the structure of your training.

    Exercise Load, unlike the Acute Training Load is not a weighted average over several days. Exercise Load is calculated from the scratch for every activity separately, and it is not influenced by previous activities, so sudden changes are absolutely normal.

  • 0 in reply to trux

    You have a good point for gains after an exercise. But this is about drop over night. 

    For more than a month the Anaerobic load was in the 1000 to 1300 range.

    Aug 9: in the morning Training Load 628 / Load Focus: Anaerobic 1387, High Aerobic 615 and Low Aerobic 976

    In the evening I went Mountain Biking, and after exercise these are the numbers:

    Aug 9, evening, Training Load 824 / Load Focus: Anaerobic 1426, High Aerobic 729 and Low Aerobic 976

    Training Load gain after MTB: 196 - normal

    Anaerobic gain after MTB: 39 - modest

    High Aerobic gain after MTB: 114 - normal

    Nest morning, Anaerobic dropped 647 points. Really? 

    A 6 Km run will add about 100 points to Anaerobic load. It means over night I lost the equivalent of 16 MTB exercises or 6 runs of 6Km each.

    No, it cannot be true. and never happened in more than 4 years I use Garmin fitness watch.

    My problem is not the load loss, but I start asking me questions about the accuracy and the science behind all this numbers, graphs and evaluations.

  • 0 in reply to Azo
    Azo said:
    Nest morning, Anaerobic dropped 647 points. Really?

    Are you telling that on Aug 10th, the Anaerobic Exercise Load for the previous day of Aug 9th dropped from 1426 to 647, or are you telling that the value of Anaerobic EL for Aug 10th was 647? If the later is the case, then it is nothing surprising - EL starts each day from zero (unlike Acute Training Load).

    In the former case (the data for the previous day changing), then look at the list of the activities for given day, under the Exercise Load chart on the Training Status page, as I suggested. Is any of the activities you did on given day missing? Or does any of them show a different value than when you look at its details? Does the total sum match the individual activities?

    Perhaps it would be better if you could post a screenshot of the Exercise Load graph from the page https://connect.garmin.com/app/report/-1/all/last_four_weeks in order to illustrate your problem.

  • 0 in reply to trux

    I may not explained clearly, here is the Anaerobic EL numbers for the bike trip:

    August 8-th: morning - Anaerobic EL: 1245, after MTB Anaerobic EL: 1387

    August 9-th: morning - Anaerobic EL: 1387 (no loss overnight), after MTB Anaerobic EL: 1426

    August 10-th: morning - Anaerobic EL: 779 ( loss of 647 points)

    It looks that all activities are recorded.

  • 0 in reply to Azo

    In that case I see absolutely no problem. As I wrote, the EL value is not carried from one to to another one like at the Acute Training Load, so there is no reason it should change only slowly like the ATL. It starts each day anew from zero.

    So if, one day, you do activities with anaerobic EL of ~1400, you can have zero the next day (if you do no activity, or if you do only aerobic activities), or you can have anaerobic EL of ~700, if you do an activity with a lower EL. There is absolutely nothing surprising on it. Oppositely, it is how the training should be structured (some sessions focused on aeroby, and others on anaeroby).