Muscle Fibre Types Flashcards
Muscle fibre types (3)
- slow oxidative fibres (SO)
- fast oxidative glycolytic (FOG)
- fast glycolytic (FG)
slow twitch muscle fibre AKA
slow oxidative fibres (SOF)
SO are associated with _______ work
aerobic work
SO produce a _____ force over a _____ period of time
- small
- long
SO have ____ resistance to fatigue
high
SO are suited to _____ based activities
endurance
example of event SO suited to
marathon
fast twitch muscle fibre AKA (2)
- fast oxidative glycolytic (FOG)
- fast glycolytic (FG)
fast twitch are associated with _______ work
anaerobic
fast twitch produce a _____ force over a _____ period of time
- large
- short
fast twitch have ____ resistance to fatigue
low
fast twitch are suited to _____ based activities
power/speed/strength
example of event FOG suited to
400-800m
example of event FG suited to
100m
slow twitch:
- a_______
- s_______
- e_______
- ____ duration (time)
- ____ intensity (effort)
- aerobic
- stamina
- endurance
- high (long time)
- low (low effort)
fast twitch:
- a_______
- e_______
- p_______
- ____ duration (time)
- ____ intensity (effort)
- anaerobic
- explosive
- powerful
- low (short time)
- high (high effort)
mitochondria (2)
- generate energy cells need to function.
- cells in muscle fibres need lots energy to help us move
which structure requires lots of mitochondria
slow oxidative
myoglobin
red pigment fount in muscle cells - used to store oxygen
which structure is myoglobin good for
slow oxidative
glycogen (3)
- eaten as carbohydrate
- stored as glycogen in muscles & liver
- turned into glucose when energy needed
phosphocreatine (PC store)
helps provide energy for muscle
which structures is phosphocreatine good for
- fast oxidative glycolytic
- fast glycolytic
triglycerides (2)
- lipids (fats) that form much of stored body fat
- circulate blood as lipoproteins
which structure is triglycerides good for
slow oxidative
SO fibre size
small (smaller = stamina)
FOG fibre size
large (big = fast)
FG fibre size
large (big = fast)
SO no. of mitochondria
large
FOG no. of mitochondria
moderate
FG no. of mitochondria
small
SO no. of capillaries
large
FOG no. of capillaries
moderate
FG no. of capillaries
small
SO myoglobin content
high
FOG myoglobin content
moderate
FG myoglobin content
low
SO PC stores
low
FOG PC stores
high
FG PC stores
high
SO glycogen stores
low
FOG glycogen stores
high
FG glycogen stores
high
SO triglyceride stores
high
FOG triglyceride stores
moderate
FG triglyceride stores
low
SO speed of contraction
slow
FOG speed of contraction
fast
FG speed of contraction
fastest
SO force of contraction
low
FOG force of contraction
high
FG force of contraction
highest
SO resistance to fatigue
high
FOG resistance to fatigue
low
FG resistance to fatigue
lowest
SO aerobic capacity
high
FOG aerobic capacity
low
FG aerobic capacity
lowest
SO anaerobic capacity
low
FOG anaerobic capacity
high
FG anaerobic capacity
highest
other factors affecting athletes potential in speed, strength or endurance event (2)
- amount of training
- efficiency of CVS –> gaseous exchange
events athletes with mix of muscle fibre types are suited to
games events
example of events mixed muscle fibre type athletes are suited to
- football
- hockey
- rugby
- (games events)