Negative PA:HR Drift Test
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Good morning;
I would almost like to use phrase “Thank you for your service!” to express my gratitude for your work on fitness for mountain athletes. I am planning to do some alpine activities for this summer in dolomites and having read the TfTNA allow me to properly prepare for them (as I like to think “it should be the mountain which turns me back, not my physical or technical condition”), I recently conducted a HR drift (outdoors), I did 15 min warmup, aiming to 148bpm, followed immediately by 60 minutes run, trying to remain on average on those 148bpm, with the following results:
During the warmup I reach the 148bpm, becaus it is what I was expecting to be my AeT right now, and in order to try to minimize the out-and-back problem I change the direction every 3kms.
As you can see the Pa:Hr is negative, which makes me think I should start on higher HR for the next time, but I might be missunderstanding something and did the test wrong (I did one on december on a race-track with the same negative result, but in this case the Pa:Hr was -3.45%).
This is the workout in case it could help: http://tpks.ws/TW3GKWY4YEWQJKD7BGRGOHTCVE
Any information or interpretation would be greatly appreciated.
Thanks a lot for any answers you might give.
Antonio Ramos
Antonio:
Thanks for your kind words and also for writing in with your question. when the paste to heart rate ratio is negative it indicates that the second half of this run’s pace increased relative to heart rate. just eyeballing the graph I can see that that happened. I can’t explain why it you sped up. But, just scanning your heart rate pace, chart from the workout I can see that you definitely sped up and heart rate remained quite constant. My best guess is that you need to try starting at a higher heart rate. since you are training for a mountaineering event, it might make sense to do this on an inclined treadmill hiking if that is the way you’re going to be doing a lot. However, if you plan to do most of your training, running on the flats, then this is probably the way you should determine your aerobic threshold.
I hope this helps,
Scott
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