Who knows about fast/slow twich fibers

[gopro]

TCD...I am utterly dissapointed with myself that I even bothered to respond to your childish posts. I promised myself I would not waste my valuable time with any of the nonsense you post here at IM, and I broke it! Shame on me. Anyway, I haven't totally figured out what your psychological/emotional problem is, but I don't know that I want to go to such a dark place.

I will from now on ignore you and everything you say as I would any child with an attitude problem, and I hope that all others will do the same (if they know what is good for them).

Regardless, have a nice life TCD. I hope you eventually grow up, learn respect, and recognize your own insecurities, so that you can be a productive member of society.

(oh, and if you have any respect left and wish to respond to me, do it in a PM so that we no longer destroy this poor guys thread)

 

[Robboe]

Well, you sure told me with that post, Eric.

 

[FortifiedIron]

Originally posted by Snake_Eyes
Pretty much, yup.

The true oxidative type I fibers have exceedingly high fatigue thresholds.....I can't see a set short of 50-100 reps doing anything for the vast majority of them.

Its the amount of tension placed on the muscle by the load. There is more tension on muscle with 55% of 1rm then there is on a muscle during hte course of a mile run. More tension, The contraction velocity and strength are much more different meaning with the higher tension the quicker fatigue happens.


Kc

 

[Snake_Eyes]

Those are also different fibers

As in, they'll all contract. But the fatigue times are so high on most of the type I fibers, if they aren't under tension long enough they don't get fatigued.

Increasing the load doesn't help because those fibers can't generate the force required to lift it. All you're doing is recruiting fibers with a higher recruitment threshold and fatiguing those instead.

Anything short of 3-5 minutes isn't going to significantly affect the vast majority of the true type I oxidative fibers. Weight training and indeed any form of short-term anaerobic work is going to predominantly train the IIa and IIx fibers. In longer bouts of work, some of the type I's with lower fatigue times may be trained, but by and large they aren't.

 

[FortifiedIron]

Ok, I see what your saying now and It makes perfect sense to me now. Thank you bro, learn something new every day!


Kc