Muscle fibre types

Anatomy

1. Lloyd Dean
Muscle Fibre Types

2. Re-cap
Very important……………
Have we learnt?
Quick fire questions!

3. Can you spot each connective
structure?

4. Articulate
-Tendon
-Epimysium
-Fascia
-Bundles of
muscle fires
-Perimyisum
-Muscle fibre
-Myofilament
-Actin
-Myosin
Try and describe
the basic structure
of muscle by
looking at this
picture

5. Aims
Describe structure and function of Type 1, Type 2a and Type 2b (P4)
Review how recruitment patterns vary (M4)
Describe the ability for the muscle fibres to adapt with increased
long term activity and detraining (P4)
Analyse the different structures and how each sports may require
ranging fibre types (D4)

6. Task
Team “Oxy” Team “FOG”
Walk around the
room until told
otherwise
1:1
12 press ups
3:1
I shall pick the music!
Every 10 seconds
perform an
explosive activity
10:1
Team “Bolt”

7. Muscle Fibre Types
Slow twitch fibres Fast twitch fibres
Type 1 Type 2
Slow oxidative fibres Fast glycolytic fibres
Red in colour White in colour
Contain large numbers of
mitochondria (Power
providers)
Contain low numbers of
mitochondria
Endurance type activities Strength / anaerobic type
activities
W
h
y
?

W
h
y
?

8. Muscle Fibre Types
Type 2 fibres subdivide:
Type 2a – Fast oxidative glycolytic (FOG)
Type 2b – Fast glycolytic (FG)
What sports would lend them selves to each type 2 fibres?

9. Enduranc
e Force
What does
this tell us?
Can we apply
it to other
Characteristics?

10. Click through for Pinterest board!

11. Fibre Type Considerations
Most potential is based on genetics
Specific training can develop respective fibre types (E.g.
Clean and jerk for Fast Glycotic)
Detraining will result in the loss of F.O.G & F.G to
Oxidative
Recovery (Timings)? Nutrition? Sleep? Tapering?

13. Task
We are going to look at certain words related to fibre types
With your study buddy, try and compare each fibre type
Include different sports for each
If you don’t know a term yet, feel free to use mobile devices to
research
http://www.wordle.net/show/wrdl/5994443/Muscle_Fibre_Types

Oxidative F.O.G F.G
Glycogen storesModerate Highest
Fatigability Moderate
Force ProducedLow
Your table might be
structured liked this

14. Terms
Structure What is it? Also see these as
clues! E.g. if it needs oxygen it
will probably be….
Glycogen Stores Carbohydrate stored in the
muscle and liver
Myoglobin Found in muscle tissue. An
oxygen-binding protein.
Capillary Density The amount of capillaries found
in the muscle
Mitochondrial DensityPowerhouse of the cell. Help to
convert food into energy.
Triglyceride Stores Fat stores in the body

15. Recap
Snowball
time………………………………………………
……………………………………………
It is nearly Christmas!
Let’s turn answers into merit and distinctions!