AFAA Personal Trainer Certification Practice Exam

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Prepare for the AFAA Personal Trainer Certification Test. Engage with insightful flashcards and multiple-choice questions to help bolster your understanding of essential fitness concepts and best practices. Get ready and feel confident on your exam day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is residual lung volume?

The total air taken in during one breath
The amount of air remaining in the lungs after exhalation
The air exchanged during normal breathing
The total air capacity of the lungs

The correct answer is: The amount of air remaining in the lungs after exhalation

Residual lung volume refers to the amount of air that remains in the lungs after a person has fully exhaled. This volume is crucial for ensuring that there is always a certain amount of air available in the lungs, which prevents the alveoli from collapsing and helps maintain consistent gas exchange in the bloodstream between breaths. This air that remains after exhalation plays an important role in keeping the lungs inflated and maximizing the efficiency of breathing. It also allows for continuous gas exchange even when inhaling and exhaling, contributing to overall respiratory health. Understanding this concept is vital for personal trainers as it relates to respiratory function and overall fitness capacity.