Muscle Fibre Types

Question 1

3 types of muscle fibre are

Answer 1

Type 1 (slow twitch)
Type 11a (fast twitch) 
Type 11x (fast twitch)

Question 2

Slow twitch
Type 1
Characteristics

Answer 2

Produce low force
Slow speed of contraction
High endurance

Question 3

Fast twitch
Type 11a
Characteristics

Answer 3

Produce high force
Moderate speed of contraction
Medium endurance

Question 4

Fast twitch
Type 11x
Characteristics

Answer 4

Produce very high force
Fast contracting
Low endurance

Question 5

Type 1

Advantage and disadvantage

Answer 5

👍🏻 good in endurance activities to continue without tiring
Eg leg muscles in long distant running

👎🏻 doesn’t produce much power

Question 6

Type 11a

Advantage and Disadvantage

Answer 6

👍🏻more resistant to fatigue than type 11x for example in 400 metre sprint

👎🏻 not as powerful as type 11x or as resistant to fatigue as type 1

Question 7

Type 11x

Advantage and disadvantage

Answer 7

👍🏻good for short explosive actions requiring power, strength and speed for example 100m sprint

👎🏻only provide power for a short amount of time before fatiguing

Question 8

Name fast twitch fibres

Answer 8

11a

11x

Question 9

Name the muscle fibre type that is predominantly used when constantly running throughout a game to mark your opponent in football

Answer 9

Slow twitch type 1

Question 10

Describe a characteristic of type 11x muscle fibres and how it is and advantage to a basket ball player

Answer 10

Very high force of contraction

So a basketball player can jump high to intercept shots