I know all of this has been beaten into the ground on these forums, but I wouldn’t mind a second set of eyes on the results from a recent gas exchange test.

I have been following the Denali training plan for about a month. My heart rate drift test at the beginning gave me an aerobic threshold value of 130 bpm, which I was skeptical of at the time. I have had a difficult time maintaining AeT and below for my workouts (I’m working on being more patient), and have trained more in the 140 – 160 bpm range. I have had hour long workouts that don’t make me feel totally gassed where I maintained 160+ bpm throughout, and recently had a 3 hour 4000′ elevation gain hike where I average 154 bpm (was definitely tired, but not unreasonably so). Training Peaks has recommended an AnT of 166 for me based on 5 weeks of consistent running and training.

For the recent gas exchange treadmill test: They had me warm up at about 2mph for 5 min prior to the test beginning. The speed and incline was then gradually increased (about 0.5% grade and 0.5 to 1 mph every min) to a max of 9.5 mph and 3% grade. Total test time was around 11 or 12 minutes. Here are the results:

AeT: 130 bpm (seems to confirm my drift test from a month ago)
AnT: 137 bpm – This is where I am confused. This seems very low, especially when compared to my max heart rate (192 bpm) and my AeT. Could this be correct? If so, I see that I don’t have ADS by the traditional definition, but am a little confused about where to train from here on out. 130 and below? Or 137 and above?

The zones they recommend are “Low: 84 – 130”, “Moderate: 130 – 137”, “High: 137 – 178”, “Peak: 178 – 192.” I recognize that these are generic zones that are just printed on a report, but they still seem odd. VO2 max was put at 40.2.

Thank you in advance for whoever else gets their eyes on these results!