1. KU Leuven Department of Movement Sciences Tervuursevest 101 3001 Leuven Belgium
2. Clinical Motion Analysis Laboratory University Hospital Leuven Weligerveld 1 3212 Pellenberg Belgium
3. KU Leuven Department of Rehabilitation Sciences Tervuursevest 101 3001 Leuven Belgium
4. Amsterdam UMC Vrije Universiteit Amsterdam Department of Rehabilitation Medicine Amsterdam Movement Sciences Amsterdam Netherlands
5. KU Leuven Department of Mechanical Engineering Celestijnenlaan 300b 3001 Leuven Belgium
6. Alyn Hospital Pediatric and Adolescent Rehabilitation Center Jerusalem Israel
7. Research Institute for Sport and Exercise Sciences Liverpool John Moores University Liverpool UK