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Old 04-23-2013   #19
The Pencil Neck
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Default Re: Blake's 1 and Only Texans Mock

Quote:
Originally Posted by Blake View Post
Yall are gonna have to explain to me what yall are looking for when deciding if a player is a fast twitch guy. Ive never noticed it.
There are several types of muscle fiber. For regular muscle (as opposed to cardiac), you've basically got 4 types of fibers:

Type I -- Red fibers. These consume lactic acid. They're for endurance types of activities and can keep going for hours. But they're very slow. These are considered aerobic. Slow twitch.

Type IIa -- Red fibers. These use Creatine and Glycogen. They are in the moderate range. They don't have as much endurance as the Type I fibers but they produce more raw strength. Aerobic.

Type IIx -- White fibers. These use ATP, Creatine, and a little glycogen. These are stronger than type IIas but they don't have the endurance.

Type IIb -- White Fibers. These use ATP and Creatine. They produce the most pure strength but they tire out very quickly. Fast twitch.

Every skeletal muscle in your body is some mixture of these different types of muscle fibers. There was a study that showed that different types of training can actually cause the distribution of fiber types to change. So if you train for endurance, you'll probably lose some of your white fibers and gain red fibers; if you train for explosive power, you'll gain white and lose red.

A guy with more fast twitch fiber is going to have more power and be more explosive. How high you can jump and how far you can jump are both good indicators of if you have predominately fast twitch muscles in your lower body.
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