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(Totentanz @ Jan. 08 2008,19:42)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE"><div>
(mikeynov @ Jan. 08 2008,18:29)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">IIRC, most of the evidence for the partitioning stuff doesn't really work like this, in the sense that people who are NATURALLY lean tend to partition calories well when overfeeding, and people who are NATURALLY overfat tend to do the opposite, and this was the context of that research.
I.e. whether you are a naturally lean guy at 12% and overfeeding or a naturally chubby guy who got down to 12% and decides to overfeed are not even close to the same thing.</div>
Can you elaborate on this? I know that whether you are naturally lean or not has a huge impact, but I was under the impression that bodyfat percentage had some impact as well, and that it's not really a good idea to bulk up much beyond 15%. Does it matter at all?
I've never really worried about it much myself, as I have a hard time getting that fat anyway - the main attraction of cutting down for me is that I won't need as many calories to gain weight when I start bulking again. But I've seen that rule of thumb thrown around a lot in the past and always assumed it was at correct.
Conversely, however, we do have a lot of (well, at least a few anyway) examples of guys who bulked up until they were hugely fat, then cut down and now are complete and total bad asses.</div>
A lot of people have emphasized this idea in the past, to only bulk when sufficiently lean, including Thib and some other nutrition gurus.
As far as I know, though, there isn't a heck of a lot of research about how much this actually matters in respect to where calories are partitioned in terms of the way we try to practically apply it. As I said, to the best of my knowledge, the research on partitioning that's usually tossed around here seems to be misapplied. Being naturally lean and partitioning calories well when you eat a fuckload of food does not mean that dieting down a fatty to 10% and then having him overeat will do the same thing.
For this to really work, you'd have to track how people partition calories when lean, and then how those same people partition calories once you've gotten them much fatter. I'm not sure if any research like that actually exists, mainly because it's the opposite direction (losing weight) that attracts the sort of money necessary to finance these things.
All of that said, in as much as fat plays an active role in the endocrine system, I could see some reasons why having too much fat may create an environment conducive to even more fat gain when overfeeding.
But even if the above is plausible, I'm still not sure how much concrete evidence we have about how much it'd actually matter at the end of the day.