Fast Twitch

Which type of muscle fibers react instantly when triggered?

• Slow-twitch fibers

• Fast-twitch fibers

• Both slow-twitch and fast-twitch fibers

• Neither slow-twitch nor fast-twitch fibers

What type of muscle fiber is best for lifting the most mass?

• Fast twitch

• Medium twitch

• Slow twitch

Which type of muscle fibers are primarily used for quick bursts of speed and power?

• Slow-twitch fibers

• Fast-twitch fibers

• Intermediate fibers

• Cardiac fibers

What is the primary energy source for fast-twitch muscle fibers during short, intense activities?

• Fatty acids

• Glucose

• Amino acids

• Glycogen

Fast-twitch muscle fibers are most abundant in which type of athletes?

• Marathon runners

• Sprinters

• Cyclists

• Swimmers

Which of the following characteristics is NOT associated with fast-twitch muscle fibers?

• High endurance

• Rapid contraction

• Low fatigue resistance

• High power output

What is the main difference between fast-twitch and slow-twitch muscle fibers?

• Fast-twitch fibers have more mitochondria

• Slow-twitch fibers contract more quickly

• Fast-twitch fibers fatigue more quickly

• Slow-twitch fibers are used for power activities

Tags

NGSS.HS-LS2-3

In which type of exercise would fast-twitch muscle fibers be predominantly used?

• Long-distance running

• Weightlifting

• Yoga

• Pilates

Which of the following best describes the role of fast-twitch fibers in muscle contraction?

• They provide sustained energy for endurance activities

• They are responsible for quick, explosive movements

• They help in maintaining posture

• They are primarily used in aerobic activities

What type of training is most effective for developing fast-twitch muscle fibers?

• Endurance training

• Strength training

• Flexibility training

• Balance training