Scott,
Thank you very much for your answer!.
I read your articles and listened your podcasts (while running!), and they have been a lot of help for me to replan my trainings!. I have also buy your book, waiting anxiously its arrive!!. Very happy to learn from you and improve my mountain running!.
I followed your advice, and make the test again, at a higher HR (avg 144). The Pa:Hr ratio was not negative this time (0,5%), but under 3,5/5,0 range:
http://tpks.ws/PANGRGULOS7CBTI4FEYTRMETSU
So, I try it again, targeting 5 bpm higher, and it results in a HR avg of 148 and a Pa:Hr ratio of 2,9:
http://tpks.ws/NCTDNFQDSVJ7FTI4FEYTRMETSU
So I thing my AeT is around 148/150…
I also made the AnT Test, and it results a HR of 171:
http://tpks.ws/QGNQFQHKCMLIXTI4FEYTRMETSU
So, I think that the spread between AeT and AnT will be between 12-13%, so I have the ADS you described… I will train mostly in my new Z1 and Z2 as you recommend to improve my aerobic base!!
Thank you very much again!!
Regards from Salta, at the north of Argentina!
Arturo