Patrick Rump, Director & Head of Sports Science


With a background in Martial Arts competing for the German National Karate Team, Patrick has a particular interest in the application of Sports Science, Sports Medicine and Educational Science. His first involvement in dance started in 2007 when William Forsythe hired him as Director of Sports Science for the Forsythe Company. A year later, he was asked by ballerina Alina Cojocaru to come to London and help her recover from a serious injury. His collaboration with the Royal Ballet began soon after. In 2013 his involvement in the dance world continued to expand when Tamara Rojo, Artistic Director of The English National Ballet, hired Patrick’s team. In 2014 Patrick founded his own company: GJUUM, Movement Progressive.

Frank Appel, Sports Science Manager


Originally from the spa town Baden-Baden in Germany, Frank joined the German army as a medic for his compulsory army service. In 2001, he enrolled at the Johann Wolfgang Goethe-University in Frankfurt, where he graduated with a Magister Artium degree in Sports Science, Sports Medicine and Psychology. During his studies he also gained practical experience working for various orthopaedic-traumatological rehabilitation centres. After some extensive traveling in Australia and New Zealand, Frank came to London where he worked as a Sports Scientist with The Royal Ballet and English National Ballet among others. In 2014, he co-founded the company GJUUM with Patrick Rump.

Stefanie Arndt, Ballet Mistress


Stefanie received her education at the Hamburg Ballet Opera School. In 1983 she won the Prix de Lausanne and joined the company of Hamburg Ballet under the direction of John Neumeier. She became Principal dancer and danced the leading roles in the classical Repertoire as well as in the contemporary Repertoire and worked with many leading choreographers and created several roles. Her work as a dancer has been honored many times. In 1994 she joined Ballet Frankfurt and worked closely with William Forsythe dancing in all his major works. She is staging William Forsythe work all over the World and is working internationally as teacher and coach. She has also been assisting Dawid Dawson and Jacopo Godani in several creations.

Christoph Thormann, Performance Coach & Technical Assistant


Christoph’s colorful career started with a spell of plumbing and engineering in Germany before becoming head chef in a Frankfurt restaurant. He then took a business assistant role in a multinational human resources consulting firm. After a serious back injury and very successful rehabilitation, he was inspired to start a personal training career that would eventually lead him to his role at GJUUM. With his incredible ability to communicate with clients and his commitment, he ensures people stay motivated to reach their goals.

Ana Nanette Tibubos, Sports Psychologist



With a background in Martial Arts competing for the German National Karate Team, Ana is keen to explore the interplay of body and mind. She obtained her PhD in Psychology at Goethe University Frankfurt. Her work as researcher and lecturer focuses on health psychology and psychological assessment. In 2014, she joined GJUUM to provide psychological support for the clients. Her aim is to create best practices with the multi-disciplinary team by using empirical quantitative and qualitative methods.

Aedin Kennedy, Lead Physiotherapist



Aedin joined GJUUM in 2014 with 11 years experience as a physiotherapist, including 5 years as full-time physiotherapist with the Royal Ballet Company. Prior to this she completed a Masters in Sports and Exercise Medicine at Queen Mary, University of London. Aedin has worked in a variety of sports including football, Gaelic football, Tae Kwon Do and Hockey as well as supporting athletes at the London 2012 Olympic games. She supports the sports science team in developing rehabilitation pathways for injured dancers based on up-to-date, evidence-based treatment and management strategies. She is currently studying for a Masters in Strength and Conditioning to support the team in bridging the gap between injury management and return to performance.

Boris Ostermöller, Social Education Worker



Having graduated from the University of Applied Sciences in Emden with a bachelor degree of Arts Social Work, Boris is a skilled Youth Educator from Northern Germany. He also achieved certificates as a Coordinator for Volunteering and as a Assertiveness Coach. Boris has worked in different fields of activity like Youth Psychiatry, School Social Work,Institute for preventing violence, mediation and assertiveness, Experiential Education, Peer Group Education, Anti Violence Researches, Youth centre for adolescents with criminal tendecies in Basel (CH), Public Youth Work in a Cultural Centre in Cologne etc. The key aspect of his professional skills is the empowered approach combined with exercises of community work, experiential education and “theatre of the oppressed”. As a Youth Officer and licensed Handball Coach Boris was in charge of several youth and men’s teams. He also gained experience in the work with young gymnasts at the Lower Saxony Gymnastic Association.

Gregor Rosenkranz, Sports Scientist



The Austrian native studied Sports and Exercise Science, Sports Medicine and Psychology in Frankfurt. After finishing University, Gregor completed a 4 month internship as Performance Specialist at Athletes’ Performance (now EXOS) and became a Certified Strength and Conditioning Specialist. Prior to working for GJUUM, he was Head of Strength and Conditioning at a rehabilitation center in Frankfurt where he furthered his education in rehabilitation and injury prevention. During his 10 years of experience as a coach, the former elite hockey player has worked with a variety of athletes from youth to professional level.