Skiing Data Analysis

Citation Author(s):
Ales
Prochazka
University of Chemistry and Technology
Hana
Charvatova
Tomas Bata University in Zlín
Submitted by:
Ales Prochazka
Last updated:
Sun, 03/09/2025 - 14:56
DOI:
10.21227/qebb-nf33
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Abstract 

The integration of wearable sensors with artificial intelligence forms the base for analyzing physical activities through digital signal processing, numerical methods, and machine learning. Computational intelligence and communication technologies enable personalized monitoring, training, and rehabilitation, with applications in sports, neurology, and biomedicine. This paper focuses on motion analysis in alpine skiing using real accelerometric, gyroscopic, positioning, and video data to evaluate ski movement patterns. The proposed methodology employs functional transforms to estimate motion patterns and utilizes artificial intelligence for signal segmentation and feature classification related to lower limb movement. Machine learning results indicate differences in energy distribution before and after ski turns and demonstrate the feasibility of classifying associated motion patterns with accuracies of 98.1\% and 90.7\%, respectively, using a two-layer neural network. The interdisciplinary application of computational intelligence in this domain enhances motion analysis, injury prevention, and performance optimization. This study highlights the unifying role of digital signal processing, which uses similar mathematical tools across various applications.

Instructions: 

Files include XLSX records of three experimental ski runs. Each file has three datasheets that contain (i) data from the WITmotion  sensors recorded with the sampling frequency of 100Hz, (ii) positioning GNSS data recorded by Garmin sensors with the sampling frequency of 1Hz, (iii) and skiing turn points detected by the GoPro video camera