You always have protein synthesis :P
I know what you mean though. Training increases protein synthesis. I don't get why everyone is talking about micro trauma and all that stuff, what you want is to train in such a way that maximizes protein synthesis compared to protein breakdown. Sure microtrauma can be a part of that, but the muscle protein synthesis is what actually makes the myofibrillar hypertrophy occur.

Then of course there is sarcoplasmic hypertrophy.

"Sure microtrauma can be a part of that, but the muscle protein synthesis is what actually makes the myofibrillar hypertrophy occur."

You sure? Wouldn't that be the process (albeit a simple one), rather than the actual cause.

yeah, that is a good point. Here's the way I see it:
Protein synthesis deposits more protein filaments into the muscles and makes them grow, you can thus say it is the cause of hypertrophy. But what causes MPS to raise? That would be several different things like a raise in IGF, MGF, etc.. but what causes a raise in those factors? Well, that would be stuff like intracellular Ca2+, AMP, muscle load (through mechanotransduction). So really, muscle contraction causes muscles to grow. But then of course, you also need amino acids for substrates to MPS, energy levels are also involved in determining level of MPS. So you can't really say 1 thing as the cause of a higher muscle protein synthesis.. It's multidimensional

haha yes it is. A very complex one indeeed.

yeah, I think the processes that regulate muscle size are very interesting. Too bad we don't know everything about it yet.

It's all hormonal. In short, excetion of the proper hrmones, at optimal times, is the key to muscle stimulation and growth.

I just eat other animals' muscles.

What makes muscle grow? simple; Boobs. Either you want yours to get bigger OR you want to tap someone else's boobs so you workout and workout harder to get what you want. In the end, its just SEX. Yes, I said it. Sex makes muscle grow!!#$!

You should eat chicken breasts since they contain a lot of type IIB myosin heavy chains.

That is advice that I've actually seen on the webz.. as if the muscles you eat would be implemented directly into your muscles..

Muscles become slightly damaged each time they are subject to intense exercise. Providing the body can supply the damaged muscles with the correct nutrients, the muscle fibres will repair, growing larger and stronger.

It is important to remember that if a muscle is not constantly forced to grow stronger, it will not. This means that gradual but constant advances must be made through the duration of any fitness program for it to work successfully.