Aerobics and Fitness Association of America (AFAA) - Founded in 1983, AFAA has certified more than 150,000 instructors from 73 countries. AFAA produces a wide variety of educational materials, including American Fitness Magazine, textbooks, reference manuals, and videos.
Web site link: http://www.afaa.com

American College of Sports Medicine (ACSM) - ACSM advances and assimilates scientific research to provide educational and practical applications of exercise science and sports medicine. Offers several levels of certifications for instructors and personal trainers.
Web site link: http://www.acsm.org

American Council on Exercise (ACE) - The American Council on Exercise is the largest nonprofit fitness certification and education provider in the world.
Web site link: http://www.acefitness.org

American Physical Therapy Association (APTA) – The American Physical Therapy Association is a national professional organization with more than 63,000 members. Its goal is to advance the field of physical therapy practice, research, and education.
Web site link: http://www.apta.org

Arthritis Foundation - The Arthritis Foundation is the largest private, non-profit contributor to arthritis research in the world and offers instructor training nationwide in both water and land based exercise programs.
Web page link: http://www.arthritis.org

Center for Successful Aging (CSA) at California State University Fullerton (CSUF). The Center for Successful Aging conducts educational, research, and service activities to promote wellness in the older adult (50+) population. A variety of physical activity programs are offered to older adults in the community. The FallProof™ Balance and Mobility Training program trains and certifies instructors nationwide.
Web page link: http://hdcs.fullerton.edu

Johnny G Spinning® – Company specializing in instructor training for stationary bike fitness classes. Johnny G Spinning® is a recognized continuing education provider by the American Council on Exercise (ACE) and the Aerobics and Fitness Association of America (AFAA).
Web site link: www.spinning.com

Physical Mind Institute - The Institute offers instructor training and certification in The Method® Pilates (derived from the original program developed by Joseph Pilates).
Web site link: http://www.themethodpilates.com

Silver Sneakers® - SilverSneakers® is a senior fitness program developed by HealthCare Dimensions, a managed health care company. The company offers training to instructors nationwide.
Web page link: http://www.silversneakers.com

Transformational Breath Foundation (Breath2000) - Practitioners teach clients a specific breathing pattern to promote an enhanced state of physical and emotional wellness.
Web site link: http://www.breathe2000.com

The American Institute of Fitness Educators (AIFE) - Provides training and certification programs to fitness professionals, including a certification in Older Adult Fitness. Web site link:http://www.aife.org

United States Water Fitness Association (USWFA) - This organization offers instructor certifications in water fitness and water walking.
Web site link: http://www.uswfa.com

United States Trager Association – The Trager Method is a massage therapy in which the practitioner uses light, gentle, non-intrusive movements to facilitate the release of the client’s deep-seated physical and mental patterns. Each part of the client's body is moved rhythmically so that the recipient experiences the possibility of moving lightly, effortlessly, and freely on their own.
Web site link: http://www.trager-org

YMCA – The YMCA is a national non-profit community service organization offering a variety of programs geared to serving community needs, including fitness programming and instructor training.
Web site link: http://www.ymca.net