1. Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland (Burtscher J, Bourdillon N, Patoz A, Malatesta D)
2. Radboud University Medical Center, Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Center of Expertise for Parkinson and Movement Disorders, Nijmegen, The Netherlands (Janssen Daalen JM, Bloem BR)
3. Radboud University Medical Center, Department of Medical BioSciences, Nijmegen, The Netherlands (Janssen Daalen JM, Bloem BR)
4. Research and Development Department, Volodalen Swiss Sport Lab, Aigle, Switzerland (Patoz A)
5. Service of Neurology, Department of Clinical Neurosciences, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland (Bally JF)
6. Department of Sport Science, University of Innsbruck, Innsbruck, Austria (Kopp M)