Glossary: Aerobic Decoupling (Pw:Hr / Pa:Hr)
Aerobic Decoupling (also known as Cardiac Decoupling) is a measure for how much your heart rate drifts (known as cardiac drift) over time. The value is calculated as the difference between the aerobic efficiency of the first half and the second half.
A positive decoupling rate means that the aerobic efficiency has decreased over time (this is to be expected as a result of fatigue). Typical decoupling rates are between 0 and 10 percent.
Aerobic decoupling values are most meaningful for consistent efforts.
Pw:Hr [%] = (AE_1 - AE_2) / AE_1
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