The fastest recorded speed by a human was set by Usain Bolt sprinting in 2009. He achieved a speed of 12.3 metres per second. Which of the following statements are features of muscle fibres in a long-distance runner? (1) 1. have reduced blood capillary network 2. have larger number of mitochondria 3. contain a low concentration of myoglobin

Answer:

Knowledge points:

Solution: