Enduro 2 software 22.06: The time spent in zone 4 (threshold) is not counted as anaerobic !

Hello,

Enduro 2: Software 22.06

1- Walking and Hiking Activity: The time spent in zone 4 (threshold) is not counted as anaerobic,

but only the time spent in zone 5 (max) is counted as anaerobic, which is abnormal.

2- Frequent untimely restarts when walking or hiking with GPS.

Thank you.

Top Replies

  • The time spent in zone 4 (threshold) is not counted as anaerobic,

    but only the time spent in zone 5 (max) is counted as anaerobic, which is abnormal.

    That's a common misconception about aeroby…

All Replies

  • The time spent in zone 4 (threshold) is not counted as anaerobic,

    but only the time spent in zone 5 (max) is counted as anaerobic, which is abnormal.

    That's a common misconception about aeroby and anaeroby. You are not necessarily in anaeroby when in Z4. You can be in anaeroby only when you do short bursts of very high intensity, not longer than a few seconds - up to around 30s at an average bloke, and up to around a minute at a trained person. After that time, the muscles fail to work and shut down completely (as a breath-hold diver, I experienced it a few times). So if you stay in Z4 for a couple of continuous minutes, it is perfectly certain your organism does not use the anaerobic metabolism.

    Have a look at the following article. It explains when you can expect some anaerobic effect:

    What Is the Training Effect Feature on My Garmin Device? | Garmin Customer Support

  • Thanks a lot for this information, it's more clear for me now.

  • it is perfectly certain your organism does not use the anaerobic metabolism

    It is just certain that your organism does not use primarily anaerobic  metabolism  and this is the reason why you can maintain your effort for these minutes.

    Cited from https://www.trainingpeaks.com/blog/power-profiling/: 

    This should NOT be taken to imply that, e.g., a 1 min all-out effort is completely anaerobic (in fact, roughly 40-45% of the energy during such exercise is derived aerobically) or fully utilizes anaerobic capacity (which generally requires 1.5-2.5 min to deplete),

    Even Garmin gave up their max. 30 secs / 1 min mantra and says now “while repeated high-intensity intervals of 10 to 120 seconds have a highly beneficial impact on your anaerobic capability and result in an improved anaerobic training effect.”

    And although humans may differ a lot, but I myself also observed that if I am just a bit below the all-out feeling I can maintain that intensity over 60-90 secs instead of 30-45 seconds while the “afterparty” feeling is practically the same. So both ways I use up all of my anaerobic capacity.

  • Yes of course, the body or individual muscles often work in a mixed mode. However, it is all about the primary effect. If you stay a ½ hour in Z5, you exploit your ~30s anaerobic capacity once, while all the resting time you work around your threshold, hence the primary effect will be still aerobic. If you do 20 short intensive strides instead, going between Z4-Z5 and Z2-Z3, you'll recharge and exploit your anaerobic capacity 20 times, hence increasing the anaerobic effect by an order of magnitude.