So you are saying that as long as you do one set where you cannot keep going and say use the partial reps principal, that that is all you need for a muscle to grow?
If you have read my training log in the training section you would know just how intense my workouts are.
I'll give you an example.
Today I plan to do 1 set of close grip underhand pulldowns as my bicep workout. It should go something like this:
Starting in the stretched position, I start the set with a very slow, rhythmic speed. I bring the bar all the way down until I'm in the peak contraction position for my biceps and I hold for a second or two. I then lower just as slow as I pull back into the fully stretched position. I keep this up until I've gotten about 6 reps on my own and then my training partner will help me just the slightest bit so that I can keep up the same speed and rhythm I had earlier. I keep this up until I've reached the point where I can absolutely no longer accomplish a single positive rep. And at that point I will hold the position of peak contraction until I absolutely can no long hold the weight in a static contraction. And then I will lower the weight as slowly as possible. And if I can still manage at this point to lower the weight in a controlled manner, my training partner will pull the bar down and I will lower as slowly as possible until I reach negative failure.
ONE SET! ONE FUCKIN HELL OF A WORKOUT! My biceps have responded exceptionally well to HIT and I expect to see results after this one workout.