Which phase of the OPT model does hypertrophy fall under?

Hypertrophy falls under Phase 3 of the OPT (Optimum Performance Training) model, which is primarily focused on building muscle size and strength. This phase is characterized by the use of moderate to high repetitions and higher intensity training, aimed at creating muscle fatigue and promoting muscle growth through a combination of mechanical tension, metabolic stress, and muscle damage.

In this phase, the training parameters typically include performing 6-12 repetitions per set, utilizing moderate to heavy loads, and incorporating various exercises to maximize muscle engagement. This strategic approach stimulates the muscles effectively, leading to an increased cross-sectional area of the muscle fibers and overall muscle hypertrophy.

Understanding the specific goals and training adaptations associated with each phase of the OPT model is essential for program design. While earlier phases focus on stabilization and strength endurance, hypertrophy specifically targets muscle growth, making Phase 3 the correct answer.