New test procedure for ski racers

Professional ski racers have to undergo regular fitness tests to check their performance. Two of these ten tests involve knee bends, which were previously checked for validity using an elaborate process that relied on the subjective verification of the coaches.

In order to objectively check whether both tests are valid squats, researchers at the Department of Medical, Health & Sports Technology at MCI have developed a new method that simplifies these strength tests for athletes.

This testing procedure is now being used successfully with junior and elite athletes in skiing at the Olympic Centre Tyrol. Christian Raschner, head of the Olympic Centre Tyrol, is enthusiastic: "This innovative procedure is more stable, more comfortable and thus speeds up the conventional test set-up from 15 minutes to just one minute. This allowed us to add one more test to the test battery of Austrian skiers." Particularly in view of the training for the 2022 Winter Olympics in China, the time saved in the tests offers important added value for the Austrian ski team.

Image processing for precise results

During testing, in which the MCI is involved, a first test checks whether the performed squat, which is performed with a high additional weight, is valid. In a second test, the athletes jump on a force plate and then complete a certain number of valid squats, after which they jump again on the force plate.

The squat measurement process looks at the femur angle (angle between the femur/thighbone and the ground), which must always be below a certain threshold for a valid squat. "With the process developed by MCI, the femur angle is extracted from the live stream in real time via the usual methods (marker tracking) of image processing and can provide the athlete with objective and immediate feedback on the femur angle," explains MCI lecturer Bernhard Hollaus, who heads the research project.

International award for innovative methodology

Researchers from the MCI's Bachelor's degree programme in Medical, Health & Sports Technology developed this approach together with the Institute of Sports Science at the University of Innsbruck back in 2020 and have been successfully implementing it at the Olympic Centre Tyrol since the beginning of 2021. The outstanding partnership between the two universities has already been recognised in other projects by the International Sports Engineering Association (ISEA) with the Higher Degree Research Student Prize.

Relevant people in this project: Christian Raschner (Head of Olympiazentrum Tirol), Frederik Krassnitzer (Technical Development Olympiazentrum Tirol), Bernhard Hollaus (Technical Project Management, MCI)