Posted by: Sabio Lantz | May 22, 2010

Muscle Types

Does anyone know what is the difference between red and white meat in our diet?  What makes some meat red?

Two Big Categories of Muscles:

  1. Voluntary (Skeletal)
  2. Involuntary (Smooth and Cardiac)

Great article on type of skeletal muscle fibers including gene sources: Wiki

Muscles: mixture of these three fiber types:
Type 1 Type 2a Type 2b
Red
slow twitch
slow oxidative
large myoglobin
many mitochondria
many capillaries
resistant to fatigue
Needed in:
– postural muscles
– long distant running
Red
fast twitch
fast oxidative
large myoglobin
many mitochondria
many capillaries
resistant to fatigue
Needed in:
– swimming and
– middle distant running
White
fast twitch
fast gylcolytic
low myoglobin
few mitochondria
few capillaries
fatigue easily
Needed in:
– Sprinting
Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Categories

%d bloggers like this: