
Originally Posted by
Gazhole
I want to say in advance i have no evidence to back any of this up. This is just stuff i've been mulling over in my head. It might be bullshit.
Something i've been thinking about lately is work vs perceived work, and it ties in with this pretty well. I think that with such high volumes (3-6 sets of 10-15 reps per exercise) the level of waste products and blood in the muscles actually stops them working as hard as they can.
For example, if i do a few sets of military press at 12 reps, my shoulders get tight from the pump, they burn because of hydrogen ions etc etc. I start to die around halfway through the fourth set. My muscles hurt so much that i stop working hard.
Now i don't have to tell you guys that gaining size isn't just about localized growth of bodyparts. Its also about the overall response from the body as a whole integrated system. Hormones, general adaptation, as well as localized hypertrophy.
Personally, i think heavier low rep training achieves this systemic growth response far more efficiently than higher rep training. For one thing, the reps are usually so low that waste products don't build up so acutely (better overall performance for the session), also achieves maximal fibre and neural recruitment because they're heavy weights, and since the reps ARE so low there is an explosive element in there too, and for another they require a lot more total body activation in terms of stability and nervous stimulations because they're heavier weights. Lighter weights just aren't a challenge to stabilize and don't require a huge neural effort to lift. This is doubly true for inherrantly smaller isolation exercises.
Going back to that waste product thing, i usually find when i train higher volume i have to reduce the weights in later sets, and/or i drop reps too. When i train heavier its not special to increase the weight every set for 5-6 sets, and often keeping the same number of reps every set. Each set seems incredibly tough at the time, but i can keep adding weight. This is obviously going to have a huge effect on muscle growth.
The last point is that this all boils down to the failure thing. Heavier training promotes increasing the weight every set and still ACHIEVING the correct number of reps, or at least stopping before failure so you can increase the weight next set. When you eventually max out or fail, thats it - exercise over. Typical volume/bodybuilding training promotes just the opposite - rep out untill you fail, do another set and fail again, do less weight, fail, waste products, huge stress response because at this point the body is shitting itself. I'm almost convinced that injuries are the ultimate result of this cycle.
Obviously i'm biased to some extent because for the most part i'm not a fan of bodybuilding past the "wow, freaky" shock aspect of it, but going by what has worked for me, my friends, my colleagues, people i've trained, people on this site, and people in my gym......well, the anecdotal evidence backing up heavier non-bodybuilding training is quite huge.
In short, i honestly thing a large basis in heavy, low-rep training with a moderate element of volume/higher rep localized hypertrophy work is optimal if you want maximum size. In this case, periodization of these two elements is absolutely essential.
Time for some milk.