1. Measurement and Sensor Technology Group, Technische Universität Darmstadt, Darmstadt, Germany
2. Cyber-Physical Systems Laboratory, Technische Universität Darmstadt, Darmstadt, Germany
3. Department for Motion Analysis, Clinic for Orthopedics and Trauma Surgery, Heidelberg University Hospital, Heidelberg, Germany
4. Locomotion Laboratory, Institute of Sports Science, Technische Universität Darmstadt, Darmstadt, Germany
5. Chair of Autonomous Systems and Mechatronics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany