Which of the following is NOT a phase of flexibility training in the OPT model?

The OPT model, developed by the National Academy of Sports Medicine, includes specific phases of flexibility training that are designed to improve range of motion, reduce injury risk, and enhance overall athletic performance. The phases outlined in the model are corrective flexibility, active flexibility, and functional flexibility.

Corrective flexibility focuses on improving joint range of motion and addressing muscular imbalances typically through static stretching and myofascial release techniques. Active flexibility involves more dynamic movements and increases range of motion through the use of bodyweight exercises and muscular engagement during stretches. Functional flexibility combines the principles of both corrective and active flexibility, integrating performance-specific movements and stretches targeting the functional needs of the athlete.

In this context, dynamic flexibility does not exist as a distinct phase in the OPT model. While dynamic stretching is indeed a commonly used method in various fitness regimens, it is typically recognized as a technique utilized within the aforementioned phases rather than as a standalone phase. Thus, identifying dynamic flexibility as part of the original three phases of flexibility training in the OPT model reflects an omission, highlighting its absence as a formalized phase.