ACE Personal Trainer Practice Exam

The primary focus of the Aerobic Endurance Training phase is improving performance for endurance events. This phase is designed to enhance the body's ability to sustain prolonged physical activity, which is crucial for events such as marathons, triathlons, and long-distance cycling. During this phase, the training typically involves longer sessions at a steady, moderate intensity, helping to improve cardiovascular efficiency, increase the number of mitochondria in muscle cells, and enhance the utilization of fat as a fuel source.

The emphasis is on building the endurance necessary to maintain a high level of performance over extended periods rather than just establishing a foundation or incorporating interval training. While establishing an aerobic base is important and lays the groundwork for later training, the Aerobic Endurance Training phase specifically targets the adaptations that will lead to improved performance in endurance disciplines. Therefore, this phase is integral for athletes aiming to excel in activities that demand sustained aerobic capacity.