Muscles & Fibre Types Recap

What is an isotonic contraction?

• where muscles contract but stay the same length

• where muscles change length as they contract

What happens in a concentric contraction?

• Muscle lengthens

• Muscle shortens

• Muscle stays same length

• Muscle explodes

During flexion of the knee what type of movement is the quadriceps doing?

• Concentric

• Isometric

• Eccentric

• Electric

If the tibialis anterior is the agonist, what is the movement occurring at the ankle

• Inversion

• Abduction

• Dorsiflexion

• Plantarflexion

Which of the following are feature(s) of a fast twitch muscle fibre (Type II)

• Contract slowly

• Produce a large amount of force

• Contract quickly

• Tire quickly

• Good for endurance