Online Pressure Measurement in the Ski Boot to Analyze the Carving Technique

This paper describes the design of an online pressure measurement system to determine the correct load for the carving technique in skiing. For this purpose the state of the art for insole pressure measurement, skiing analysis and mobile data acquisition devices is being investigated. The research shows that there is no pressure measurement system available yet that uses pressure sensors on the lower leg to make statements about the lower extremity movements during skiing. Therefore, a pressure measurement system was developed, which uses eight sensors under the soles of the feet and on the lower legs and transmits the collected data via Bluetooth Low Energy (BLE) to a cell phone. The measurement data is displayed and stored for further analysis with the phyphox application. With the help of the measurement system it is possible to make statements about incorrect posture and typical movement sequences during carving and to obtain reproducible results. In the outlook, optimization proposals for further research are presented.