Muscle Fibres

Question 1

Slow twitch type 1

Answer 1

• low force of contraction
• slow speed of contraction
• high resistance to fatigue
• aerobic
• high myoglobin
• high mitochondria
• good capillary network

Question 2

Fast twitch type 2a

Answer 2

• high force of contraction
• medium speed of contraction
• moderate resistance to fatigue
• aerobic and anaerobic
• medium myoglobin
• medium mitochondria
• moderate capillaries network

Question 3

Fast twitch type 2x

Answer 3

• very high force of contraction
• fast speed of contraction
• low resistance to fatigue
• anaerobic
• low myoglobin
• low mitochondria
• low capillaries network