Training peaks offers 14days free trial.
I’m assuming when they talk about percentage they are just dividing the high average by the low average….
So I did my drift test just over a week ago outside on a flat course along the promenade by the coast. I felt my comfortable heart rate was around 148bpm. The resulting Pa:Hr was 4.33%. The following week on my easy runs I would need to push a lot harder to reach 148bpm and my perceived AET felt more like 143bpm and also my pace was faster on a flat at 143bpm than on my test at 148bpm. Could my hr on the test have been too high even though the result was positive or could it be that I was just having an off day on the day of the test. I just get a feeling 148bpm is too high.
I have attached my test and the graph from garmin as I don’t have trainingpeaks premium