The International Sports Sciences Association is an organization that operates as a teaching institution and certification agency for fitness trainers, aerobic instructors, and medical professionals.

The ISSA offers a general fitness certification course for personal training and six specialized fitness certification courses, including fitness nutrition, sports nutrition, strength and conditioning, exercise therapy, senior fitness and youth fitness. The student obtains the status of "Elite Trainer" after completion of three coursesd "Master Trainer" after completion of six courses.

Instruction is based on exercise assessment, nutritional planning, fitness instruction, sports medicine practice, and post-rehabilitation training. The school has enrolled over 130,000 students, both in fitness education and continuing education courses.

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