Characterization of lower-limbs inter-segment coordination during the take-off extension in ski jumping.

Details

Serval ID
serval:BIB_A62BC4EEC6F9
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Characterization of lower-limbs inter-segment coordination during the take-off extension in ski jumping.
Journal
Human Movement Science
Author(s)
Chardonnens J., Favre J., Cuendet F., Gremion G., Aminian K.
ISSN
1872-7646 (Electronic)
ISSN-L
0167-9457
Publication state
Published
Issued date
2013
Peer-reviewed
Oui
Volume
32
Number
4
Pages
741-752
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Abstract
Take-off, the most important phase in ski jumping, has been primarily studied in terms of spatio-temporal parameters; little is known about its motor control aspects. This study aims to assess the inter-segment coordination of the shank-thigh and thigh-sacrum pairs using the continuous relative phase (CRP). In total 87 jumps were recorded from 33 athletes with an inertial sensor-based system. The CRP curves indicated that the thighs lead the shanks during the first part of take-off extension and that the shanks rotated faster at the take-off extension end. The thighs and sacrum first rotated synchronously, with the sacrum then taking lead, with finally the thighs rotating faster. Five characteristic features were extracted from the CRP and their relationship with jump length was tested. Three features of the shank-thigh pair and one of the thigh-sacrum pair reported a significant association with jump length. It was observed that athletes who achieved longer jumps had their thighs leading their shanks during a longer time, with these athletes also having a more symmetric movement between thighs and sacrum. This study shows that inter-segment coordination during the take-off extension is related to performance and further studies are necessary to contrast its importance with other ski jumping aspects.
Pubmed
Web of science
Create date
17/11/2013 18:23
Last modification date
02/10/2020 5:25
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