I've usually seen it used in reference to being able to recruit more muscle fibers at once. Not if that's BS or not (I was under the impression that it's not), but seems like those folks were connecting it largely to the really quick early strength improvements that come even before muscle size increases.
What is going on when an advanced lifter gains strength but doesn't gain any body weight?
How much strength? Has this been your personal experience, or have just read about it?
Just throwing out an example of what Fulcrum was mentioning about it meaning different things to different people. It's how a coach I previously worked with (and a few others folks I know) used it. I'd never really thought too much about it. I think he was mostly using it in reference to beginners only. Happy to be corrected, I'm here to learn and attempt to contribute where I can.
I agree. But Heavy disagrees.