Originally Posted by jarude
Sooo is LG/IF basically nonsense scientifically then, or is gorging for the sake of sparing still viable?
Can't say for sure as the effects of small versus large doses of protein have only been studied short term, like the difference it makes in a month or so.
This, the difference in acute effects and long term effects seem to be problematic in researching nutrition. For instance, it has also been shown that differencies in macros are the most important for body recomposition changes in a calorie surplus. They saw that people who ate more fat for a given calorie surplus gained more body fat than those who ate the same surplus in carbs. So the acute effect of high fat intake (in conjunction with some carbs) lead to more fat gain than low fat/high carbs. This study was however also looked at long term and while there was a difference in body fat gain berween the groups over the first month or so, they both evened out to roughly the same fat gain over half a year.
So, my perpective is that you can be very "optimal" theoretically, by only eating lean protein, having more and smaller meals, low fat intake, only complex carbs, etc, but in many cases it's unsure if the theoretical short term benefits make a practical difference in the end.
There's nothing wrong in striving to be optimal in short term, and if you really want to be on the safe side "you do it the right way", that might be your best bet if it hasn't been studied long term. In that case, it would mean that Leangains is worse for muscle building but decent for sparing muscle mass. Imo, its main benefits are psychological by keeping satiation high with macro manipulations and fewer meals.