Understanding Fast-Twitch Muscle Fibres

Fast-twitch muscle fibres are primarily responsible for (a)  

• Endurance activities
• Slow, sustained movements
• Quick, explosive actions
• Flexibility and stretching

Match the following types of training with the muscle fibers they most effectively develop.

• Enhances muscular endurance

• Long-distance running

• Develops fast-twitch muscle fibers

• High-intensity interval training (HIIT)

• Improves flexibility and core strength

• Yoga and Pilates

• Develops slow-twitch muscle fibers

• Low-intensity, high-repetition weightlifting

What is a key characteristic of fast-twitch muscle fibres compared to slow-twitch fibres?

• Higher resistance to fatigue

• Greater oxygen utilisation

• Faster contraction speed

• Predominantly used in aerobic activities

Which exercise is commonly associated with activating fast-twitch muscle fibres?

• Marathon running

• Sprinting

• Walking

• Light cycling

To effectively train fast-twitch muscle fibres, one should focus on:

• Low-intensity, prolonged exercise sessions

• High-intensity, short-duration exercises

• Moderate-intensity, long-duration exercises

• Stretching and flexibility routines

Fast-twitch muscle fibres rely primarily on which energy system?

• Aerobic

• Anaerobic

• Oxidative

• Endurance-based

What is one key factor mentioned that influences muscle fibre composition?

• Genetics

• Diet alone

• Sleep schedule

• Flexibility exercises

(a)   is an example of an explosive movement.

• Squat jump
• Walking lunge
• Seated leg press
• Plank hold

How can athletes improve fast-twitch fibre activation during weight training?

• Use slow, steady movements with light weights

• Perform fast, explosive reps with heavy weights

• Focus on static stretching between sets

• Use resistance bands only

What recovery strategy is recommended after high-intensity training to prevent injury?

• Static stretching immediately after a workout

• Avoiding cool-down exercises

• Hydration and active recovery

• Completely resting for the next 72 hours