Muscle fibre types Flashcards
(15 cards)
What is type 1?
Slow oxidative or SO
What is type 2a?
Fast Oxidative Glycolytic or FOG
What’s type 2b or (2x)?
Fast Glycolytic or FG
what’s hypertrophy?
the increase in muscle size caused by an increase in the number and size of myofibres per fibres
What are SO muscle fibres designed for?
designed to store oxygen in myoglobin and process it in the mitochondria. This allows aerobic work to take place.
What are FG and FOG muscles fibres designed to do?
designed to work under aerobic intensities with large stores of phosphocreatine for rapid energy production
characteristic: contraction speed
type 1: slow
type 2a: fast
type 2b: fast
characteristic: force produced
type 1: low
type 2a: high
type 2b: high
characteristic: fatigue levels
type 1: low
type 2a: medium
type 2b: high
characteristic: myoglobin levels
type 1: high
type 2a: medium
type 2b: low
characteristic: glycogen stores
type 1: low
type 2a: high
type 2b: high
characteristic: triglyceride stores
type 1: high
type 2a: medium
type 2b: low
characteristic: capillary density
type 1: high
type 2a: medium
type 2b: low
characteristic: aerobic density
type 1: high
type 2a: medium
type 2b: low
characteristic: anaerobic density
type 1: low
type 2a: medium
type 2b: high
