Energy Systems in Athletics

What is the primary energy system used outside the mitochondrion for short bursts of activity?

• Phosphagen system

• Oxidative system

• Electron transport chain

• Citric acid cycle

Which HRmax range is considered "Low Intensity"?

• < 60%

• 60% - 75%

• 76% - 85%

• 86% - 95%

Which level of effort is associated with a perceived exertion of "Maximal"?

• Recovery

• Low Intensity

• High Intensity

• Maximal Intensity

What type of energy production is required by a sprinter?

• Large amounts of energy over a short period of time

• Small amounts of energy over a long period of time

• Moderate energy over a medium period of time

• No energy production

What does the body use to maintain a continuous supply of energy?

• Glucose

• Oxygen

• Adenosine Triphosphate (ATP)

• Lactic acid

What is ATP referred to as in the body?

• Energy bank

• Energy currency

• Energy reserve

• Energy vault

Why is ATP important for muscle contraction?

• It provides oxygen

• It supplies energy

• It removes waste

• It stores nutrients

What happens when ATP is broken down?

• It releases energy for immediate muscle contractions.

• It forms new proteins.

• It stores fat for later use.

• It increases blood sugar levels.

What does ATP consist of?

• A base (adenine) and 3 phosphate groups

• A base (cytosine) and 2 phosphate groups

• A base (guanine) and 4 phosphate groups

• A base (thymine) and 1 phosphate group

What type of reaction forms ATP?

• A reaction between ADP and a phosphate

• A reaction between glucose and water

• A reaction between ribose and adenine

• A reaction between DNA and RNA