This is the most n00b question and I'm sure everyone 'should' know the answer to it yet I don't quite know the answer and I'd venture to say most others do not. Anyway:
When going for my PT certification the book dictated that in general the higher the weight used during a set, the more stimulated your muscles will get and thus the more they will grow. But, of course, under this idea a set of lower reps/higher weight is better than higher reps/lower weight. So why, then is the repetition range for muscular hypertrophy between endurance and strength?
According to what I read, a set of, for example, 275x1 would be better for hypertrophy than 220x10. But we all know the supposed reptition range for hypertrophy is higher than for pure strength and is somewhere around 7-14 or so.
So obviously there is another factor, and that factor I assume is repetitions. So why and how do more repetitions (specifically in the optimal hypertrophy range) cause muscular hypertrophy? I understand they're being worked more (more volume and more energy output) but how does that translate to the muscles wanting to enlarge?
I'd really like to see someone as knowledgeable as PowerManDL answer this but I haven't seen him around in a while...