Very interested to hear about your process/results. I’ve considered getting one for the same purpose (ie LT1, not LT2), but it’s hard to justify the expense for me, and I’d need to be confident of getting consistent results from the testing for it to be worth it.
I’d also be interested to see how this correlates with the HRV method using ALPHA 1: See the discussion in this thread regarding the HRV logger app
I am seeing a lot of variability in the alpha 1 metric, so even if I ride 60 minutes at the same power (and very stable cadence/HR), I get quite a wide range of the alpha 1 metric. The results are variable enough with a constant load that a step test would have to have 30+ minute steps, and likely 60 minute to be confident in the numbers.