Understanding Muscle Fibre Types

Which type of muscle fibre is primarily used for endurance activities?

• Type 2a

• Type 1

• Type 2b

Type 2a muscle fibres are known for which of the following characteristics?

• High endurance, low power

• High power, low endurance

• Intermediate power and endurance

Which type of muscle fibre is most likely to be used by a sprinter during a 100-metre race?

• Type 1

• Type 2a

• Type 2b

Type 1 muscle fibres are also known as:

• Fast-twitch fibres

• Slow-twitch fibres

• Intermediate-twitch fibres

Which type of muscle fibre is most resistant to fatigue?

• Type 1

• Type 2a

• Type 2b

Type 2b muscle fibres are best suited for which type of activity?

• Long-distance running

• Weightlifting

• Cycling

Which type of muscle fibre has the highest mitochondrial density?

• Type 1

• Type 2a

• Type 2b

Type 2a muscle fibres are also referred to as:

• Fast oxidative fibres

• Slow oxidative fibres

• Fast glycolytic fibres

Which type of muscle fibre is most likely to be used during a marathon?

• Type 1

• Type 2a

• Type 2b

Type 2b muscle fibres primarily rely on which energy system?

• Aerobic

• Anaerobic

• Phosphagen