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Sensors 2016, 16(4), 463; doi:10.3390/s16040463

Potential of IMU Sensors in Performance Analysis of Professional Alpine Skiers

1
Industrial Engineering & Management Research Institute, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
2
Department of Industrial & Systems Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
3
Department of Physical Education, Korea National Sport University, Seoul 05541, Korea
4
Division of Liberal Arts and Science, Korea National Sport University, Seoul 05541, Korea
5
Department of Physical Education, Seoul National University, Seoul 08826, Korea
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editors: Fabrizio Lamberti, Andrea Sanna and Jon Rokne
Received: 3 February 2016 / Revised: 26 March 2016 / Accepted: 28 March 2016 / Published: 1 April 2016
(This article belongs to the Special Issue Sensors for Entertainment)
View Full-Text   |   Download PDF [1478 KB, uploaded 1 April 2016]   |  

Abstract

In this paper, we present an analysis to identify a sensor location for an inertial measurement unit (IMU) on the body of a skier and propose the best location to capture turn motions for training. We also validate the manner in which the data from the IMU sensor on the proposed location can characterize ski turns and performance with a series of statistical analyses, including a comparison with data collected from foot pressure sensors. The goal of the study is to logically identify the ideal location on the skier’s body to attach the IMU sensor and the best use of the data collected for the skier. The statistical analyses and the hierarchical clustering method indicate that the pelvis is the best location for attachment of an IMU, and numerical validation shows that the data collected from this location can effectively estimate the performance and characteristics of the skier. Moreover, placement of the sensor at this location does not distract the skier’s motion, and the sensor can be easily attached and detached. The findings of this study can be used for the development of a wearable device for the routine training of professional skiers. View Full-Text
Keywords: IMU sensor; performance evaluation; stability; alpine skiing IMU sensor; performance evaluation; stability; alpine skiing
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yu, G.; Jang, Y.J.; Kim, J.; Kim, J.H.; Kim, H.Y.; Kim, K.; Panday, S.B. Potential of IMU Sensors in Performance Analysis of Professional Alpine Skiers. Sensors 2016, 16, 463.

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