Measuring spatio-temporal parameters of uphill ski-mountaineering with ski-fixed inertial sensors.

Details

Serval ID
serval:BIB_0A920C6C33A5
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Measuring spatio-temporal parameters of uphill ski-mountaineering with ski-fixed inertial sensors.
Journal
Journal of Biomechanics
Author(s)
Fasel B., Praz C., Kayser B., Aminian K.
ISSN
1873-2380 (Electronic)
ISSN-L
0021-9290
Publication state
Published
Issued date
2016
Peer-reviewed
Oui
Volume
49
Number
13
Pages
3052-3055
Language
english
Abstract
In this study an algorithm designed for the diagonal stride in classical cross-country skiing was adapted to compute spatio-temporal parameters for uphill ski mountaineering using a ski fixed inertial sensor. Cycle duration, thrust duration, cycle speed, cycle distance, elevation gain, and slope angle were computed and validated against a marker-based motion capture system during indoor treadmill skiing. Skiing movement of 12 experienced, recreational level athletes was measured for nine different speed and slope angle combinations. The accuracy (i.e. mean error) and precision (i.e. standard deviation of the error) were below 3ms and 13ms for the cycle duration and thrust duration, respectively. Accuracy (precision) for cycle speed, cycle distance and elevation gain were -0.013m/s (0.032m/s), -0.027m (0.018m), and 0.006m (0.011m), respectively. Slope angle accuracy and precision were 0.40° and 0.32°, respectively. If the cross-country skiing algorithm would be used without adaptations, errors would be up to one order of magnitude larger. The adapted algorithm proved valid for measuring spatio-temporal parameters for ski-mountaineering on treadmill. It is expected that the algorithm shows similar performance on snow.

Keywords
Algorithms, Athletes, Humans, Mechanical Phenomena, Monitoring, Physiologic/instrumentation, Mountaineering, Movement, Skiing, Spatio-Temporal Analysis, Inertial sensors, Phase detection, Ski mountaineering, Ski touring, Spatio-temporal parameters
Pubmed
Web of science
Create date
19/07/2016 18:45
Last modification date
20/08/2019 13:32
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