[kmyi]

Hi.  I am currently training to improve my ADS.  I have been struggling with getting a successful heart rate drift test, and most of the struggle is getting my heart rate to stabilize before I begin.  During my last few tests my heart rate has continued to climb after starting and my drift during the first half of the test has been fairly large.

Today I tried a treadmill workout with what I felt like was a conservative speed and incline.  I warmed up for 25 minutes and then lapped my watch at 25 minutes right as I made my final speed and incline adjustments.  I did this because I wanted to see how long it would take my heart rate to stabilize.  I then continued the workout until 1h 45 min, starting my cooldown around 1h 38 min.  When I reviewed the workout, it seemed like my heart rate continued to climb for quite a while after the last treadmill adjustment.

I did the drift calculation, and if I use a starting time of 30 min then I get a starting HR of 130 bpm, a first 30 min (30 – 60 min) avg HR of 137 bpm and a second 30 min (60 – 90 min) avg HR of 140 bpm.  This equates to only 2% drift, which would say that this effort was below by AeT, but the large amount of drift in the first half of the test has me wondering if that is the case.  For the first half, I started at 130 bpm and drifted to 140 bpm by 60 minutes, maxing at 145 bpm at 57 minutes.

My questions are:

Does this look like an aerobic effort?
Can I use this workout as a heart rate drift test?

I have linked the workout below.  Any advice would be greatly appreciated!

http://tpks.ws/UIOJDDT7SM4B3JR7TFGDUVLOAU

[Scott Johnston]

I warmed up for 25 minutes and then lapped my watch at 25 minutes right as I made my final speed and incline adjustments.

If I understand you correctly, this might be the source of the large drift from 130-137 in the first half of the test.  You started your test just as you made an adjustment to the pace and grade.  You should be finding a pace and grade near the second half of the warm-up, where your HR stabilizes.  Then start the watch.

Scott

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