rpmfreestyle wrote:
Andrew, can you explain to me the difference between the AWC and FRC. Is it FRC work of only ATF system, but AWC - total work of all anaerobic system ( ATF + lactate anaerobic)? Is it correct?
First and foremost, FRC is a functional measurement reflecting your resistance to fatigue during high intensity, non-steady-state exercise.
As for sources of ATP during such exercise, they would include the phosphagen system, glycolysis, and an aerobic component, with the first being rather minor and the relative importance of the other two varying with exercise duration.
Although originally viewed as strictly non-aerobic (hence the original name/acronym anaerobic work capacity/AWC), it is now realized that W' also includes an aerobic component. However, the mathematical model used to calculate it vs. FRC is different, hence you can't really use the terms interchangeably (just as, e.g., you can't use the terms lactate and ventilatory threshold interchangeably).