Why do you think fast gains in strength are somehow ideal? Do you think there are no downsides to such methods, in the long run?
Tendon strength is a whole topic unto itself, and those training methods have nothing to do with increasing muscle size.
I wanted to learn on this and read and think for a while.
So, although eccentric trains the negative movement and can use more force, does that change the result? The result being, moving more weight overall. Granted there is less risk of injury as I understand, but strength none-the-less.
I think my first post on this thread may have thrown you off and don't take that as the topic I'm on now. I was confused earlier and now I'm not talking about gaining mass. Quite the contrary. For a while now, I've understood the two to be on opposite ends of the spectrum; when one gains muscle size, their body's energy is NOT being directed towards improving strength at all, and when one is getting stronger, muscle mass is not increasing. As the one finger pull up shows, it's tough to find the limit to strength based on mass.
My question to you is a comparison then of training the positive motion, short, weighted, bursts, that provide strength with little to no mass vs the training of negative motion, non-burst, no weights or weighted eventually(?) that also provide strength with little to no mass.
I know what you mean about tendon strength, but who's to say that the concentric version doesn't also strengthen tendons?
As I understand, any soreness (DOMS) means the muscle is wore out and this usually happens over time. When wore out and broke down it has to grow. As the wiki says on eccentric training, the idea is that you will get sore, but that will go away over time. The alternate that I propose is that with concentric, minimal reps (2 at a time) with breaks in between, doesn't create soreness, you will be able to train more often. Don't get me wrong, I'm not a gym junkie, quite the opposite, I want to be there as little and infrequently as possible. Rather the point of training more freq. is actually so you can get the necessary goal of strength to improve what you need to improve. Same as diet, if one can detox and heal in less time and with less effort, why do the longer more inefficient way?
I don't have enough experience with eccentric training to really make a conclusion that's why I'm just sharing my thoughts and seeing what you know of it. I'm only looking for the most efficient and productive exercise.
Side note: I did negative, slow, pushups. Would static be better than allowing myself to drop? Or is 'better' too vague of a term here?