BTEC revision quiz 5

What is the best fibre type for a 100m sprint?

• Type I

• Type IIa

• Type IIx

• Type III

Event: 10,000 m race. What is the best fibre type to have?

• Type I (slow-twitch)

• Type IIa (fast-twitch oxidative)

• Type IIb (fast-twitch glycolytic)

An increase in muscle fibre number is termed:

• hypertrophy

• hyperplasia

• atrophy

• causes a decrease in muscle size

What energy system does the 100 m runner use for energy production, and how long does it take to replenish 100%?

• The 100 m runner uses the ATP-PC system for energy production, and it takes about 2-3 minutes to replenish.

• The 100 m runner uses the aerobic system for energy production, and it takes about 30 minutes to replenish.

• The 100 m runner uses the glycolytic system for energy production, and it takes about 5-10 minutes to replenish.

• The 100 m runner uses the ATP-PC system for energy production, and it takes about 30 seconds to replenish.

The 10,000 m runner uses which energy system, and how long does it take to replenish?

• Aerobic system, takes hours to replenish

• Anaerobic system, takes minutes to replenish

• Phosphagen system, takes seconds to replenish

• Lactic acid system, takes days to replenish

The anticipatory rise before exercise in the cardiovascular system is due to:

• increased adrenaline levels

• decreased heart rate

• reduced blood flow

• lower oxygen demand

What happens to cardiac output, stroke volume, and heart rate once exercise starts?

• Cardiac output increases, stroke volume increases, heart rate increases

• Cardiac output decreases, stroke volume decreases, heart rate decreases

• Cardiac output remains the same, stroke volume increases, heart rate decreases

• Cardiac output increases, stroke volume decreases, heart rate remains the same

The redistribution of blood flow during exercise involves:

• increased blood flow to the muscles and decreased blood flow to the digestive organs

• decreased blood flow to the muscles and increased blood flow to the digestive organs

• equal distribution of blood flow to all organs

• increased blood flow to the brain and decreased blood flow to the muscles

The significance of increased a-vO2 difference during a race is:

• Improved oxygen delivery to muscles

• Decreased oxygen consumption

• Increased heart rate

• Reduced blood flow

Why is thermoregulation important during a race?

• To maintain optimal body temperature for performance

• To increase body temperature for faster metabolism

• To decrease body temperature to prevent sweating

• To ignore body temperature as it is not important