Machteld, one of the original founders of ISES, continues to be a dedicated supporter. She has actively participated in the scientific committee and has attended almost every annual conference. In 2011, Machteld played a key role in organizing a conference in the Netherlands, which included a public day where speakers presented their talks in a way that was accessible to practitioners, riders, and equine enthusiasts. Additionally, Machteld served as the membership secretary on the first ISES council and established the basic membership organization. She is known for her strong commitment to ensuring robust science with sound methodology, resulting in valid and reliable results with practical implications.
Machteld's primary research focus lies in pain assessment, with over 10 peer-reviewed papers and a scientifically-validated app available to vets and owners of horses and donkeys experiencing acute and chronic pain. She is also involved in the development of an Equine Facility Welfare Assessment protocol and other initiatives aimed at improving the lives of equine patients in clinics. Machteld shares her expertise by teaching low-stress handling techniques and promoting respect for the biology of horses to new equine practitioners, with the goal of enhancing safety and welfare.
Furthermore, Machteld is dedicated to engaging the general equine public through the dissemination of scientific knowledge. Alongside Anne Muller, she developed the WOW poster (working on optimal welfare), which presents ISES training principles in a fun and educational format for novice and young riders, with supplementary materials for trainers and teachers. Machteld finds joy in seeing the poster displayed in various places, including restrooms, where everyone has the opportunity to learn from it.
In her spare time, Machteld runs her own clinical behavior consulting company, equusresearch.nl, which constantly presents her with new challenges.