Multi-segmental movements as a function of experience in karate
(Mehrgliedrige Bewegungen als eine Funktion der Erfahrung im Karate)
Karate is a martial art that partly depends on subjective scoring of complex movements. Principal component analysis (PCA)-based methods can identify the fundamental synergies (principal movements) of motor system, providing a quantitative global analysis of technique. In this study, we aimed at describing the fundamental multi-joint synergies of a karate performance, under the hypothesis that the latter are skilldependent; estimate karateka`s experience level, expressed as years of practice. A motion capture system recorded traditional karate techniques of 10 professional and amateur karateka. At any time point, the 3D-coordinates of body markers produced posture vectors that were normalised, concatenated from all karateka and submitted to a first PCA. Five principal movements described both gross movement synergies and individual differences. A second PCA followed by linear regression estimated the years of practice using principal movements (eigenpostures and weighting curves) and centre of mass kinematics (error: 3.71 years; R2 = 0.91, P « 0.001). Principal movements and eigenpostures varied among different karateka and as functions of experience. This approach provides a framework to develop visual tools for the analysis of motor synergies in karate, allowing to detect the multi-joint motor patterns that should be restored after an injury, or to be specifically trained to increase performance.
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Schlagworte: | Karate Bewegung |
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Notationen: | Kampfsportarten |
DOI: | 10.1080/02640414.2016.1223332 |
Veröffentlicht in: | Journal of Sports Sciences |
Veröffentlicht: |
2017
|
Jahrgang: | 35 |
Heft: | 15 |
Seiten: | 1515-1522 |
Dokumentenarten: | Artikel |
Sprache: | Englisch |
Level: | hoch |