ACE Personal Trainer Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

High-intensity training occurs during the Aerobic Power Training phase, which is designed to improve the body’s ability to sustain high levels of exertion. This phase focuses on increasing the individual's aerobic capacity and enhancing their performance through the incorporation of interval training, tempo runs, and other forms of high-intensity workouts.

Aerobic Power Training aims to push the cardiovascular system to work harder, thereby improving overall efficiency and endurance at higher intensities. This phase typically involves training at or above the individual's lactate threshold, which enables adaptations that enhance the body's ability to utilize oxygen during vigorous activity.

In contrast, the other phases focus on different goals: Aerobic Base Training emphasizes developing a foundation of aerobic fitness through lower-intensity, longer-duration sessions. Aerobic Efficiency Training aims to improve the efficiency of the aerobic system at moderate intensities. Lastly, Aerobic Endurance Training generally targets sustaining activity over longer periods but does not emphasize high-intensity efforts like Aerobic Power Training does. Therefore, high-intensity training specifically aligns with the objectives intrinsic to Aerobic Power Training.