Muscle Fibres

Question 1

Name all 3 muscle fibre types

Answer 1

Slow Oxidative (SO)
Fast Oxidative Glycolytic (FOG)
Fast Glycolytic (FG)

Question 2

Rank in terms of neuron size (high to low)

Answer 2

FG & FOG

SO

Question 3

Rank in terms of fibres per neuron (high to low)

Answer 3

FG & FOG

SO

Question 4

Rank in terms of capillary density (high to low)

Answer 4

SO & FOG

FG

Question 5

Rank in terms of mitochondrial density (high to low)

Answer 5

SO
FOG
FG

Question 6

Rank in terms of myoglobin density (high to low)

Answer 6

SO
FOG
FG

Question 7

Rank in terms of phosphocreatine stores (high to low)

Answer 7

FG &FOG

SO

Question 8

Rank in terms of speed of contraction (high to low)

Answer 8

FG & FOG

SO

Question 9

Rank in terms of force of conraction (high to low)

Answer 9

FG & FOG

SO

Question 10

Rank in terms of fatigue resistance (high to low)

Answer 10

SO
FOG
FG

Question 11

Rank in terms of aerobic capacity (high to low)

Answer 11

SO
FOG
FG

Question 12

Rank in terms of anaerobic capacity (high to low)

Answer 12

FG
FOG
SO

Question 13

SO fibre characteristics (types of sport, contraction force, recovery, training ratio)

Answer 13

Good for endurance athletes
Provide energy for sub maximal aerobic work
Provide low contraction force
Individual fibres recover quickly
1:1 or 1:0.5 training:recovery ratio

Question 14

FOG fibre characteristics (type of sport, force volume, fatigue)

Answer 14

Used in 400m
Designed to give large amount of force quickly
Have capacity to resist fatigue

Question 15

FG fibre characteristics (type of sport, speed of contraction, DOMS, recovery)

Answer 15

Used in 100m
Used when maximal effort is needed quickly
Recruited in 2-10 seconds of contraction
Cause eccentric muscle fibre damage which then causes the DOMS for 24-48 hours
Takes 4-10 days to completely recover