types of muscle fibers Flashcards
1
Q
The 3 types of muscle fibers
A
Type 1 / slow twitch
Type 2a / fast oxidative
Type 2x / fast twitch
2
Q
what is type 1
A
low force
slow contractions
lots of blood ( makes them red )
designed for aerobic exercise
have lots of mitochondria
long duration activities
3
Q
what is type 2a
A
more resistant to fatigue than type 2x
less force than type 2x
example - 200m swimmers / 800m race
anaerobic activities
4
Q
what is type 2x
A
largest amount of force
greatest anaerobic capacity
poor resistance to fatigue
example - sprint, shot putter
5
Q
what is anaerobic respiration
A
producing energy without oxygen
6
Q
what is aerobic respiration
A
producing energy using oxygen
