1. Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
2. Section of Competitive Sports, Swiss Swimming Federation, Bern, Switzerland
3. Section Performance Sport, Swiss Federal Institute of Sport, Magglingen, Switzerland
4. Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
5. Department of Sport Science & Kinesiology, University Salzburg, Hallein-Rif, Austria