Exercise Physiology

What is the primary cardiovascular response to exercise?

• Increase in heart rate and cardiac output

• Increase in blood pressure and respiratory rate

• Decrease in heart rate and cardiac output

• No change in heart rate and cardiac output

Which energy system is primarily used during high-intensity, short-duration activities?

• Glycolytic energy system

• ATP-PCr energy system

• Lactic acid energy system

• Aerobic energy system

How does the body regulate temperature during exercise?

• By decreasing heart rate and slowing down breathing

• By decreasing sweat production and constricting blood vessels near the skin's surface

• By increasing sweat production and dilating blood vessels near the skin's surface

• By increasing shivering and reducing blood flow to the skin

What are the effects of altitude on exercise performance?

• Altitude reduces oxygen availability, leading to decreased exercise performance.

• Altitude causes an increase in exercise performance due to improved oxygen delivery.

• Altitude has no effect on oxygen availability or exercise performance.

• Altitude increases oxygen availability, leading to increased exercise performance.

During exercise, what happens to stroke volume?

• increases

• stays the same

• fluctuates

• decreases

Which energy system is primarily used during long-duration, low-intensity activities?

• Aerobic energy system

• Glycolytic energy system

• Anaerobic energy system

• ATP-PC energy system

What is the primary respiratory response to altitude?

• Decrease in breathing rate and depth

• No change in breathing rate and depth

• Increase in heart rate and blood pressure

• Increase in breathing rate and depth

What is the main source of energy during the first few seconds of high-intensity exercise?

• Electron transport chain

• ATP-PCr system

• Krebs cycle

• Glycolysis

How does altitude affect the body's oxygen uptake?

• Oxygen uptake increases at higher altitudes

• Altitude has no effect on oxygen uptake

• Oxygen uptake is the same at all altitudes

• Oxygen uptake decreases at higher altitudes