Deniz Ertas van Gennip
Deniz came to Pilates through her own body's need. While studying for her second Bachelor's degree in Contemporary Dance—after first completing a degree in Psychology—she was diagnosed with mild scoliosis after months of severe lower back pain. Through regular Pilates practice, she discovered how profoundly the method could support her body, inspiring her to begin her BASI Pilates Comprehensive Teacher Training in 2015, which she completed in 2017.
Her background in Psychology deeply informs how she teaches. She understands that movement isn't just physical; it's emotional, neurological, and deeply personal. This dual training allows her to read not just bodies, but people—meeting each student where they are with patience and insight.
Deniz has specialized in working with scoliosis, pre- and postnatal bodies, osteoporosis, and pelvic floor health. She's drawn to the people who need careful, intelligent guidance—those whose bodies have specific stories and require more than generic instruction.
Her teaching style is focused, attentive, and rooted in a simple belief: exercise should bring joy, not punishment. She creates a calm, balanced atmosphere where challenge meets pleasure, and movement feels rewarding rather than overwhelming. In her classes, you'll experience full-body classical Pilates—strength, stamina, flexibility, balance, and stretching woven together in a thoughtful, natural flow.
Deniz observes each body with care, offering modifications and guidance so everyone moves safely and effectively. Her goal is to help you discover your hidden strength, build a deeper mind-body connection, and leave class feeling stronger and more grounded.
Certifications
-BASI Pilates Comprehensive Teacher Training Course (2015-2017)
-BASI Pilates Mentor Programme (November 2025)
-Pilates Through Pregnancy and Beyond (2017)
-Pilates for Osteoporosis (2019)
-Enhancing Athletic Performance (2021)
-Powerhouse of Shoulder (2018)
-Hip Joint Exploration (2018)
-Neck Problems (2018)
-Pilates for Kids (2018)
-Pilates with Foam Roller (2017)-Stretching within Strengthening (2018)
-Tactile Cueing (2018)
-Six Pack Pilates (2019)
-Introduction to F2 System (2024)
PSSE-Schroth for Scoliosis
-PSSE-Schroth Basic Online course (2024)
-PSSE-Schroth Level 1 course (2024)
-PSSE-Schroth Level 2 course in (2024)
-PSSE Schroth Masters Course (optional)-July 2025
Scolio-Pilates Certified by Karena Thek:
-Module 1 (2021)
-Module 2 (2021)
Fit Pelvic Floor Support For Life (6 Week Program) by Tom Waldron Movement
Therapy (2024).
The Aligned Knee by Tom Waldron Movement Therapy (2025).
Deniz’s testimonials
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manage hypermobility and chronic pain
I’ve been doing Pilates with Deniz for several months (49 sessions to be exact), and it’s made a huge difference. Her approach is both supportive and highly knowledgeable, especially for people dealing with hypermobility or chronic pain. She creates a safe environment where you can build strength, body awareness, and confidence without fear of injury. Whether in private or duet sessions, Deniz tailors each class to individual needs and always finds a way to balance different levels in the same session. I’ve noticed real improvements in posture, movement habits, and overall comfort in my body. Highly recommend!
Deniz O., Amsterdam
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pilates during pregnancy with hernia
I don't even know how to express the appreciation that I have for Deniz. I started with pregnancy pilates when I was 15 weeks pregnant because I am 39 years old and I have three buldging disks, so I was worried that I will have seirous issues as my pregnancy progresses. I am now 34 weeks pregnant, with absolutely no pain anywhere in my body. I feel very fit and strong. Apart from obviously being an amazing and knowledgeable pilates instructor, Deniz is a wonderful person, making every single training with her like a little positive energy booster in my day. Just entering her studio already makes me feel better. I can't wait to continue training after I give birth! If you want to feel physically and mentally good in your pregnancy (and outside), Deniz is a person to go to!
Olja L., Amsterdam
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pilates for scoliosis
I've been practicing with Deniz since April 2024, and it has really transformed my life! Living with scoliosis and having had two surgeries in the past, I used to deal with a lot of pain and limited mobility. But thanks to Deniz's amazing approach, I've been able to enjoy a much more active lifestyle and spend longer periods without any discomfort. I try to practice regularly, usually around 2 to 3 times a week. Each session is an opportunity for me to build strength, improve my flexibility, and really learn how my body works. Deniz has created such a welcoming and supportive space where I feel safe to push myself without worrying about getting hurt. If you're dealing with scoliosis and feeling alone on your journey, I want you to know that there is hope! Finding the right practice and instructor can truly make a difference. I’m so grateful for this experience, and I wholeheartedly recommend Deniz's classes to anyone looking for support and relief.
Veronika B., Amsterdam
