It sounds like you should test your AnT with the 30 minute test, I bet it is higher than you think. AnT is supposed to be an effort you can maintain for 30 minutes to an hour depending on how well-trained you are.
I had been training this summer using Training For The Uphill Athlete as a guideline, initially using my aerobic threshold as 150bpm based off my age – 180 and the nose breathe test which was about 153bpm. I had done one shorter race as my first Z3 effort where my average HR was 164 for 1:30 effort and used that as a ballpark lactate threshold. Both of which seemed to be appropriate for easier aerobic efforts and when I added Z3 intervals and I didn’t think much of it.
I had gotten through my goal races a hilly trail marathon then Imogene pass run (17.1 miles and 5700ft of climbing) 6 days later. My average HR for the marathon was 159 for 5hrs and Imogene pass was 164bpm for 3:20. This had me thinking that maybe I significantly underestimated my aerobic threshold because technically I ran near my lactate threshold for >3hrs on that 2nd race. Any thoughts on this? I hadn’t been on this website yet so didn’t do an aerobic threshold test as discussed on the forum and in a few articles here. As I gear up for skimo season I’m running again and still using 150 as my AeT but may bump that up based off responses here and if I formally test it. Thanks in advance.
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