Which of the following is the primary adaptation from resistance training in the stabilization level...

The stabilization level (Phase 1: Stabilization Endurance Training) of NASM’s OPT model focuses on improving muscular endurance and stability through controlled, low-load, high-repetition training. The CPT7 Study Guide states the primary adaptation is “to increase a muscle’s ability to produce force for an extended period of time while maintaining ideal posture and joint stability”.

Muscular hypertrophy (Option A) is the main adaptation of Phase 3: Muscular Development, strength endurance (Option B) is specific to Phase 2: Strength Endurance Training, and power (Option D) is developed in the Power Level (Phases 5 and 6). Therefore, for the stabilization level, the main adaptation is muscular endurance, which supports foundational movement quality and injury prevention before progressing to heavier loads or explosive movements.