How do you calculate and calibrate APR and upper training zones, and is %APR used to define HIIT? – Athletica

How do you calculate the APR ? What model do you use ? The APR is computed by using the equation: P(t)=MAP+(MPP−MAP)⋅e−k⋅*t *
This was taken from the work of Weyand (running) and Sanders (cycling).
How do you calibrate the upper zones ? The bottom Z5 is MAP (from above equation, very close to MMP5’) and upper Z5 is 120% MAP.
Bottom Z7 is 50% between top MAP and MPP. Yes, there might be a gap between Z6 and Z7 but there are reasons for it.
Top Z7 is MPP (equation above, max 10”, very close to MMP10”)
Are you using %APR to define your HIIT ? No we are not defining HIIT with APR, although we are on our way to implement that option. We are using Z6 to prescribe 30”:30” HIIT SHORT aerobic sessions, and Z5 for LONG intervals (in line with HIIT Science book).

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