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Kinematical and EMG-Classifications of a Fencing Attack

Frère, J. and Göpfert, B. and Nüesch, C. and Huber, C. and Fischer, M. and Wirz, D. and Friederich, N. F.. (2011) Kinematical and EMG-Classifications of a Fencing Attack. International journal of sports medicine, 32,1. pp. 28-34.

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Official URL: http://edoc.unibas.ch/dok/A5841578

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Abstract

8 expert fencers were studied with a 3-dimensional motion analysis system. Each subject performed 10 FLèCHE attacks toward a standardized target. Surface electromyography signals (EMG) were recorded of the deltoid PARS CLAVICULARIS, infraspinatus and triceps brachii CAPUT LATERALE muscles of the weapon arm. The recorded EMGs were averaged using EMG wavelet-transformation software. 4 phases were defined based on the arm kinematics and used to classify fencers into 2 groups. A first group of 4 fencers showed an early maximal elbow extension (Early MEE) whereas the second group presented a late maximal elbow extension (Late MEE). 2 EMG-classifications were based on this kinematical classification, one in the time-domain and the other in the frequency-domain by using the spherical classification. The time-domain EMG-classification showed a significantly ( P=0.03) higher normalized deltoid intensity for the Early MEE group (91±18%) than the Late MEE group (36±13%) in the attack phase. The spherical classification revealed that the activity of all the muscles was significantly classified (recognition rate 75%, P=0.04) between the 2 groups. This study of EMG and kinematics of the weapon upper limb in fencing proposes several classifications, which implies a relationship between kinematic strategies, muscular activations and fencing success.
Faculties and Departments:03 Faculty of Medicine > Bereich Operative Fächer (Klinik) > Bewegungsapparat und Integument
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Operative Fächer (Klinik) > Bewegungsapparat und Integument
03 Faculty of Medicine
UniBasel Contributors:Friederich, Niklaus F. and Göpfert, Beat
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Thieme
ISSN:0172-4622
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:07 Jun 2018 14:07
Deposited On:08 Jun 2012 06:42

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