Increasing fast twitch muscle fibers

[JV]

Hey guys, I don't really make a lot of threads. Prefer to read them or use the good ol "search", but I couldn't find an answer! I have heard of a couple drugs increasing your slow twitch muscle fibers. But I was curious if there are any drugs out there (steroids, peptides, ect) that greatly increase your fast twitch.
Thanks

 

[JV]

Bump

 

[JV]

Just looking for "YES! THESE AND THESE!", or "None that I know of" Hahaha

 

[calabresenj]

I would love to hear if their are.

 

[Toogood]

I am pretty sure there isn't any drugs that will affect that. Only training will to a certain degree.

 

[geomall]

Hello guys! This is my first post!
There are actually some compounds that have shown a slow to fast muscle fiber transformation..
Some of them are:
clenbuterol-albuterol(and all the b-2 adrenergic agonists and maybe everything that mimics adrenaline),
T3
cyclosporine a - FK506 (via inhibition of calcineurin)

vitamin D3
coenzyme q10

I also think that forskolin can do that, via activation of cAMP..
Maybe, this is how clenbuterol also acts to muscle fiber phenotype..So, maybe phosphodiesterase-4 inhibitors like rolipram,hesperidin,luteolin, etc could work...

Some supplements that inhibit calcineurin are
caffeic acid, catnip, punicalagin(from pomegranate), kaempferol, quercetin, salvia miltiorrhiza...
Calcineurin inhibitors, also protect from clenbuterol-induced cardiac hypertrophy..
Sure there are many others,also acting through another pathways..
Lastly, electrical muscle stimulation of high frequency (120hz)
converts some slow twich fibers to fast ones...

 

[Nelson Montana]

Muscle fiber type is genetically set after puberty. You can, however, increase mitochondria with high rep training.