Muscle fiber questions...

[TightInn]

I have a bunch of questions about muscle fibers and will probably have more if someone helps me out with this first batch. If one of you has time to answer these or point me to a reliable resource then I'd really appreciate it...

As far as I know (and correct me if I'm wrong, please), there are fast and slow twitch muscle fibers, everybody's body has a different amount of both, and fast twitch can't turn into slow twitch or anything like that. Ok, so questions..

What kind of effort targets fast twitch?
What's the difference, in the fast twitch muscles, between power (60% of 1rm for speed type stuff), strength, and just absolute speed (maybe 10% of your 1rm as fast as you can go)? Like how do they react and stuff to each kind of exercise...?
What kinds of efforts target slow twitch?
How will 15 reps to failure and 200 reps to failure differ?
I think there was some kind of deal with slow twitch muscles in your legs and running for ~20 minutes (I'm sure it would be the same in your upper body, too)...what is it?

Thanks a lot!

 

[Advaik]

fine I dont speak for anyone, I am going to go crawl in my corner and DIE now

 

[IronLion]

Your fast twitch fibers are responsible for power and short duration maximal contraction

Slow twitch type II are responsible for long duration endurance type output

I guess you are asking which type of exercises recruit the fibers of a given type at what rate?

I can't honestly tell you the difference in effect on muscle tissue but here is a place to start researching this on your own:

http://jap.physiology.org/search.dtl

 

[Alucard]

They contract in order of necessity. Don't bother training for fiber type.

 

[Thaibox]

I think I speak for everyone ...

No you don't

 

[coolcolj]

heavy weights and explosively fast lighter to moderate weights recruit the fast twitch fibers - higher threshold fibers

ballisticly fast moves selectively target the fast ones, because the slow ones can't even begin to contract in the time frame

The closer the contraction time is to one second and above, the greater the percentage of slower fibers recruited.

 

[Alucard]

Yep.