• National Academy of Sports Medicine Addressing fitness, sports performance, and sports medicine. Live, online, and home-study courses.

• National Association for Fitness Certification Training and continuing education for personal and group trainers, consultants.

• National Council of Strength and Fitness Personal training certification and continuing education for the fitness professional.

• National Dance Exercise Instructors Training Association NDEITA, workshops in Group Exercise, Personal Training, Pilates, continuing education.

• National Endurance Sports Trainers Association Distance learning and workshops for fitness, yoga, and personal training instructors.

• National Federation of Professional Trainers Providing trainer certification for over 16 years. Directory, free software, NFPT magazine, forums.

• National Fitness Therapy Association A non-profit accrediting association for fitness professionals and fitness facilities. (Winter Park, CO)

• National Gym Association, Inc. A nonprofit organization maintaining the highest standards for safety, education and fitness training.

• National Strength and Conditioning Association Certification Commission For strength and conditioning specialists, and personal trainers.

• National Strength Professionals Association NSPA has certified over 4,500 professional fitness instructors and personal trainers.

• Natural Fitness Trainers Association Certification for natural fitness trainer. Natural training methods are approved by the NFTA advisory board.

• Optimal Performance Institute Nutrition, sports psychology, natural health, naturopathy and health club management.

• Outdoor Action Fitness Group and personal training, certification and continuing education courses, by Tina Vindum.

• Professional Fitness Instructor Training Certification preparation and continuing education for personal trainers, group instructors, public educators.

• Sara's City Workout Provider of continuing fitness education.

• Speedo Sponsored WaterART Aquatic Fitness Provides aquatic fitness leaders with training based on current research. Canada.

• Synergy Fitness Register for an online course to be a personal trainer.

• The Fitness Firm For training group exercise leaders, personal trainers, and management staff of health and fitness programs. Mansfield, MA.