1. Institute of Sport and Movement Science, University of Stuttgart, Allmandring 28, 70569 Stuttgart, Baden-Württemberg, Germany
2. Department of Motion Science, Friedrich-Schiller-University Jena, 07749 Jena, Thuringia, Germany
3. Institute of Mathematics/Stochastics, Friedrich-Schiller-University Jena, 07749 Jena, Thuringia, Germany