What are the characteristics of fast twitch muscle fibres? (A) Explosive activities, fatigue slowly (B) Endurance activities, fatigue slowly (C) Explosive activities, fatigue quickly (D) Endurance activities, fatigue quickly - HSC - SSCE Personal Development and Physical Education - Question 18 - 2010 - Paper 1

Fast twitch muscle fibres, also known as type II fibres, are primarily designed for explosive activities such as sprinting or heavy weightlifting. They are characterized by:

1. Explosive Activities: These fibres excel in generating short bursts of power and speed, making them ideal for activities that require rapid and intense movements.

2. Fatigue Quickly: Unlike slow twitch fibres, fast twitch fibres tire out quickly due to their reliance on anaerobic metabolism. This means they can generate energy without oxygen but are limited in duration and sustainability.

Overall, the correct answer to the question is (C) Explosive activities, fatigue quickly.