Algonquin College Health Program Assessment (AC-HPAT) Practice Exam

Which activity can lead to an increased production of oxygen debt?

1. Taking long, deep breaths

2. Engaging in anaerobic exercise

3. Practicing yoga

4. Resting after exercise

The correct answer is: Engaging in anaerobic exercise

Engaging in anaerobic exercise can lead to increased production of oxygen debt primarily because this type of exercise involves high-intensity efforts that exceed the body’s ability to supply oxygen to the muscles. During anaerobic activities, such as sprinting or heavy weightlifting, the body relies on energy sources that do not require oxygen, resulting in the production of lactic acid. This process creates an imbalance between the oxygen demand and the oxygen supply, culminating in a state known as oxygen debt. When engaging in anaerobic exercises, the body's muscles use up available oxygen quickly, leading to a temporary shortage that is compensated through lactate production, which contributes to fatigue. Once the exercise ceases, the body must then work to "pay back" this oxygen debt, which involves increased breathing to restore oxygen levels and metabolize the accumulated lactate. In contrast, taking long, deep breaths, practicing yoga, and resting after exercise do not typically result in the accumulation of oxygen debt. These activities focus on relaxation, controlled breathing, and restoring the body's energy levels, which instead help to replenish oxygen and support recovery.