Hmmm does this apply to Olympic lifters & powerlifters as they do
the same movements over & over again & improve - are they immune ?
Periodization of loads, sets and repetitions.
Muscle recovery and CNS recovery are two different animals.
Hell, full nervous recovery is fucking slow when training with heavy weights. In theory, the nervous system should recover within 24 hours.
However, after partial recovery, there is a relapse - the process is said to be biphasic.
The voluntary strength an athlete can produce takes longer to return to normal compared to involuntary strength; if you were to directly stimulate the motor units of the same muscle using an electric current, contraction strength would appear to have already returned to normal.
If your lifts are regressing when everything else seems normal (nutrition, sleep, supplements, etc.) - that's a tell.