AFAA Personal Trainer Certification Practice Exam

What does pre-exhaustion in a workout involve?

1. Working all muscle groups simultaneously

2. Isolating large muscles first

3. Prioritizing cardio over strength training

4. Focusing solely on small muscle groups

The correct answer is: Isolating large muscles first

Pre-exhaustion in a workout refers to a training technique where a larger muscle group is isolated and worked to fatigue before it is engaged in compound exercises that involve multiple muscle groups. This technique is designed to ensure that the targeted muscle is adequately fatigued, which can enhance muscle recruitment during subsequent exercises that involve larger muscle groups. By isolating and exhausting a large muscle first, such as performing an isolation exercise for the chest (like a dumbbell fly) before moving on to a multi-joint exercise (like the bench press), the individual is ensuring that their primary focus remains on the target muscle. This method can lead to increased intensity and a more effective strengthening and hypertrophy response in the larger muscle group. The other options do not align with the concept of pre-exhaustion. For instance, working all muscle groups simultaneously does not isolate any particular muscle for targeted fatigue. Prioritizing cardio over strength training shifts the focus entirely away from muscle fatigue and pre-exhaustion techniques, and concentrating solely on small muscle groups would not effectively elicit the benefits of pre-exhaustion regarding larger muscle groups.