neuromuscular system Flashcards
autonomic nervous system
regulates he function of out internal organs i.e. heart and also controls some of out skeletal muscles
- involuntary
neuromuscular system
nervous system and muscles work together to allow movement
sympathetic nervous system
prepares the body for exercise
fight or flight
parasympathetic nervous system
relaxes the body and slows down many high energy functions
main types of muscle fibres
slow oxidative - type 1
fast oxidative - type 2a
fast glycolytic - type 2b
slow twitch
- slower contraction speed
- better adapted to lower intensity exercise
- produce most energy aerobically
fast twitch
- much faster contraction speed
- generate a greater force of contraction
- fatigue very quickly
- short, intense burst of effort
- produce most energy anaerobically
type 2a fast oxidative - more resistant to fatigue and used for 1500 where longer bursts of energy is needed
type 2b fast glycolytic - fatigue much quicker and used for highly explosive events such as 100m where quick, short burst of energy is needed
characteristics of type 1
- slow contraction spped
- low force produced
- low fatiguability
- very high aerobic capacity
- high capillary density
- high myoglobin content
characteristics of type 2a
- fast contraction speed
- high force produced
- medium fatiguability
- medium aerobic capacity
- medium capillary density
- medium myoglobin content
characteristics of type 2b
- fast contraction speed
- high force produced
- high fatiguability
- low aerobic capacity
- low capillary density
- low myoglobin content
how can you increase muscle fibres
largely genetic determined but through training
hypertrophy
where the muscle has become bigger and stronger
