Exercise Physiology Multiple Choice Questions

During steady-state aerobic exercise, heart rate (HR) generally…

• Decreases

• Remains fixed

• Increases with intensity

• Stops fluctuating

The volume of air inspired or expired per breath is…

• Vital capacity

• Tidal volume

• Residual volume

• Functional residual capacity

Which energy system predominates in a maximal 6–10 second sprint?

• Oxidative phosphorylation

• Anaerobic glycolysis

• ATP-PC system

• β-oxidation

In aerobic exercise, which variable(s) rise to meet oxygen demand?

• Respiratory rate

• Stroke volume

• Cardiac output

• All of the above

The volume of blood pumped per beat is…

• Cardiac output

• Stroke volume

• Ejection fraction

Cardiac output is calculated as…

• HR + TV

• SV × HR

• SV ÷ HR

• TV × breathing rate

A hallmark chronic adaptation to endurance training is…

• Decreased capillary density

• Increased mitochondrial density

• Decreased myoglobin content

• Decreased stroke volume

A near-term consequence of anaerobic glycolysis during intense work is increased…

• Glycogen storage

• Lactate and hydrogen ions

• Oxygen saturation

• HDL cholesterol

The primary neural controller of breathing rhythm is the________

• Cerebellum

• Medulla oblongata

• Hippocampus

• Temporal lobe

In an all-out 30–60 second effort, which change is most prominent?

• Large rise in lactate concentration

• Large rise in HDL

• Rise in arterial oxygen saturation

• Fall in carbon dioxide production