NASM Personal Trainer Certification The NASM (National Academy of Sports Medicine) Personal Trainer Certification is one of the most recognized certifications in the industry. The NASM-CPT is built around the Optimum Performance Training™ (OPT™) model--a cutting edge training system founded on scientific, evidence-based research. NASM-CPT can be considered a corrective certification in that it focuses on individuals muscular imbalances through corrective exercise. For that reason as NSCA (National Science and Conditioning Association) NASM-CPT certification equipts certified trainers to work with various individuals ...