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Mary Jo Ketterhagen-Ida

John Garey Fitness & Pilates
Los Angeles, California USA

Mary Jo has had a long history in the fitness industry, beginning in 1993 as an Aerobics Instructor.  She fist received her certification as a STOTT PILATES® Certified Instructor in 2002, and quickly moved on to become an Instructor Trainer for Merrithew Health & Fitness™ specializing ZEN•GA™ in 2013, Total Barre™ in 2013 and is a Lead IT for STOTT PILATES. Since becoming certified, Mary Jo has taught courses throughout the Unites States, and internationally as well.  In addition to her STOTT PILATES Certification, Mary Jo is also a certified White Lotus Yoga Instructor and a Mad Dogg® Spinning Instructor.  She specializes in creating workouts for all fitness levels and helping each of her clients to reach their fitness goals.  

Matwork, Reformer, Cadillac, Chair, Barrels, ISP, ZEN•GA™, Total Barre™

Mary Jo Falvey

Marietta, Georgia USA

Mary Jo is a Certified STOTT PILATES® Instructor and Instructor Trainer for Merrithew Health & Fitness™ specializing in STOTT PILATES who loves to share her passion for fitness and health. A native of Cold Spring Harbor, New York, Mary Jo studied Sociology at the State University of New York at Stony Brook and holds a Master’s degree in Exercise Physiology and Adult Fitness from Adelphi University.  She is also certified through the American Council of Exercise as a Personal Trainer, and has completed certifications in TRX Suspension Training, Indoor Cycling, Water Aerobics, CPR and First Aid, Functional Fitness, and Professional Communication.  Mary Jo is currently studying for certification as a Small Business Fitness Owner.  Clients love her creativity, balance and support.  

Matwork, Reformer

Melanie Byford-Young

Pacific NW Pilates
Ridgefield , Oregon USA

Merrithew Health & Fitness™ Master Instructor Trainer Melanie graduated with a degree in Physiotherapy from McMaster University in Hamilton, Ontario and specializes in the STOTT PILATES® Rehab Program. Specializing in orthopedics and manual therapy, she spent the next 10 years working as a physiotherapist at a private practice. In 1999, she became an IT teaching the full repertoire for Matwork, equipment as well as Injuries & Special Populations. Melanie is one of few instructors in the United States instructing the STOTT PILATES Rehabilitation Series. Utilizing Pilates for the prevention and rehabilitation of injuries, brings her the most joy in her career. 

Matwork, Reformer, Cadillac, Chair, Barrels, ISP, Rehab

Melina Giacomasso Caleffi

CPA Pilates
Sao Paulo, Brazil

Melina graduated from the Dance University in Campinas, Brazil in 2005, where she studied classical ballet and contemporary dance. Her background made it easier to teach people how to understand their own body and create a good quality of movement. Currently studying Physiotherapy in Brazil, Melina started her STOTT PILATES® training in 2010, and went on to become an Instructor Trainer for Merrithew Health & Fitness™ specializing in STOTT PILATES in 2013. In 2013, she became the first Total Barre™ Instructor Trainer in Brazil. She continues to be an advocate of the STOTT PILATES method and the Five Basic Principles in particular.


Matwork, Reformer, Total Barre™

Melissa A. Siple

Northeast Pilates Education Centers
Manchester, Massachusetts USA

Melissa started teaching group exercise in 1985, and was certified through the American Council on Exercise (ACE).  She eventually became a CEU  provider for ACE, and certified in Personal Training and Spinning.  Melissa continued her interest in health and fitness by becoming a Physical Therapy Assistant.  In 1998, Melissa found STOTT PILATES®, and became an Instructor Trainer for Merrithew Health & Fitness™, specializing in STOTT PILATES in 2003. Melissa owns a studio in East Greenwich, RI and is also certified in Zumba®, Yamuna® Body Rolling, TRX® and holds belts in Krav Maga, Budokon and MMA.  Melissa graduated from the University of RI with a bachelor degree in Human Sciences, and from Bryant University with an MBA in Marketing.  She holds professional certifications from the American Society for Training & Development, Seton Hall School of Law’s Pharmaceutical & Medical Device Healthcare Compliance program, the Healthcare Compliance Association, Dale Carnegie Training, and an EMT license from the State of RI’s Department of Health.

Matwork, Reformer, Cadillac, Chair & Barrels, ISP, SPX