An inertial sensor-based system for spatio-temporal analysis in classic cross-country skiing diagonal technique.
Details
Serval ID
serval:BIB_6D28CE9A936B
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
An inertial sensor-based system for spatio-temporal analysis in classic cross-country skiing diagonal technique.
Journal
Journal of Biomechanics
ISSN
1873-2380 (Electronic)
ISSN-L
0021-9290
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
48
Number
12
Pages
3199-3205
Language
english
Notes
Publication types: Journal ArticlePublication Status: ppublish
Abstract
The present study proposes a method based on ski fixed inertial sensors to automatically compute spatio-temporal parameters (phase durations, cycle speed and cycle length) for the diagonal stride in classical cross-country skiing. The proposed system was validated against a marker-based motion capture system during indoor treadmill skiing. Skiing movement of 10 junior to world-cup athletes was measured for four different conditions. The accuracy (i.e. median error) and precision (i.e. interquartile range of error) of the system was below 6ms for cycle duration and ski thrust duration and below 35ms for pole push duration. Cycle speed precision (accuracy) was below 0.1m/s (0.005m/s) and cycle length precision (accuracy) was below 0.15m (0.005m). The system was sensitive to changes of conditions and was accurate enough to detect significant differences reported in previous studies. Since capture volume is not limited and setup is simple, the system would be well suited for outdoor measurements on snow.
Keywords
Cross-country skiing, Diagonal stride, Inertial sensors, Phase detection, Spatio-temporal parameters
Pubmed
Web of science
Create date
09/11/2015 15:19
Last modification date
20/08/2019 15:26