DOROTHEE VANDEWALLE   |   Master Teacher

Dorothee VandeWalle is a master Pilates teacher and is recognized as one of the leading teacher trainers and master Pilates practitioners in the world. Dorothee has been teaching Pilates for almost 30 years and has trained individuals at all levels of fitness from elite athletes to injured and/or older clients. She started teaching in New York City with Romana Kryzanowska and was a teacher trainer for Romana's Pilates for over a decade before starting her own training program. Dorothee teaches in the tradition of the original, authentic Pilates method. She enjoys teaching instructors and practitioners from all different backgrounds and believes that anyone can benefit from authentic Pilates training.

Originally from Belgium, Dorothee started dancing at the age of seven and was trained on scholarship at the Institute für Buhnentanz. She danced professionally for over ten years in Europe and the United States. She's been teaching in Seattle since 1993 and has had her own studio since 1999.


April Tillman is a M.A.T. Pilates teacher trainer certified on the Basic and Intermediate Systems. She trains apprentices for full certification at many of our training centers. April has been a teacher trainer with M.A.T. Pilates since 2010.

Growing up with the understanding that a healthy lifestyle begins with physical movement, April has spent more than half her life teaching Pilates, certifying new instructors, and learning something from every student along the way. She started teaching in 1997 after becoming certified through the program of Romana Kryzanowska, direct protégé of Joseph Pilates. After certification, April worked in Los Angeles with Mari Winsor before moving to Sun Valley, Idaho, where she opened a studio and training center affiliated with Dorothee VandeWalle and the M.A.T. Pilates Teacher Certification program. In 2009, April and her family moved to Portland, Oregon, where she opened Urban Pilates. After 10 years in Portland, she moved back to her hometown of Hood River, Oregon, and opened Summit Studio. At Summit, April continues to teach classical Pilates and train new instructors. She also travels around the world providing instructor training and ensuring the legacy of the original Pilates method.


Martt Lawrence is a M.A.T. Pilates teacher trainer certified on the Basic and Intermediate Systems. She has been preparing apprentices for full certification since 2008. Martt has been teaching Pilates for two decades and has worked with dancers, athletes, and students of varying injuries.

Originally certified in 1996, Martt was re-certified in December of 2005 by Dorothee VandeWalle at Metropolitan Pilates. In 2006, she founded The Pilates Center of San Francisco and began offering the M.A.T. Pilates Teacher Certification program. Prior to that, Martt was the Pilates instructor at The San Francisco Ballet for five years where she drew from her experience as a former professional dancer with the Houston and Cincinnati Ballet companies as well as a modern dancer and choreographer. In 2019, Martt relocated to Portland, Oregon, where she continues to teach and train new instructors in the M.A.T. Pilates Teacher Certification program.


Chris Blackburn is a M.A.T. Pilates Mentor at Metropolitan Pilates in Seattle. Chris was trained by Dorothee VandeWalle at Metropolitan Pilates and was M.A.T. certified in 2006. He is a trained gymnast and former dancer whose interests include nutrition and healthy eating. Chris has been on staff at Metropolitan Pilates since 2006. You can see Chris in action on the Pilatesology website.


Renata Jarvi is a M.A.T. Pilates Mentor at Urban Pilates in Portland, OR. She was certified by M.A.T. Pilates in 2011. She helps prepare apprentices for certification at Urban Pilates. A native of Ashland, OR, Renata has taught yoga and dance in Oregon, Arizona, North Carolina and Utah.


Stella Sandoval is a M.A.T. Pilates mentor at UP Pilates Burlingame in the San Francisco Bay Area. She helps prepare apprentices for full certification. Stella received her teacher certification from M.A.T. Pilates in 2013. For more than two decades Stella has worked as a fitness professional in the Bay Area, teaching fitness classes and creating workout videos that were sold worldwide.