The DF Alpha test is relying on the test protocol. How did you test it besides using fatmaxxer?
Aerobic threshold – drift test vs DFA alpha 1
I have used the drift test described on this site to calculate my aerobic threshold. At about 82% of max HR, my drift was around 4% so I am assuming that is probably a good enough estimate.
I recently learned about the DFA Alpha 1 HRV based test and used the FatMaxxer app to do a test to see if the results confirm. Turns out that my aerobic threshold as determined by an alpha 1 of around 0.75 is closer to 72% of my max HR, which is even lower than the Maffetone formula.
This seems like a pretty big discrepancy. Has anybody else used the alpha 1 test and gotten confirmation with the HR drift (or other) test?
Just some background: I have been into endurance sports for about five years now. Over the last winter, I became aware of ADS and have been doing “base training” since November doing runs or cycling between 1.5 to 3 hours. My avg heart rate per session varies with duration. For the shorter ones, I am closer to what I thought was my aerobic threshold heart rate (82% of max HR) but for the longer ones, I usually between 70-75% of max HR. If the alpha 1 test is accurate, then it seems I’ve been overtraining during my base. Thanks for any insights you can provide.
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