Stretch-shortening cycle function of the knee extensor muscle-tendon unit during the power clean

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Deutscher übersetzter Titel:Funktion des Dehnungs-Verkürzungs-Zyklus' der Muskel-Sehnen-Einheit der Kniestrecker beim Power Clean
Autor:Kipp, Kristof
Erschienen in:Proceedings of the 33rd International Conference on Biomechanics in Sports : June 29-July 03, 2015, Poitiers, France
Veröffentlicht:Konstanz: 2015, S. 1019-1021, Lit.
Beteiligte Körperschaft:International Society of Biomechanics in Sports
Herausgeber:Universität Konstanz
Format: Literatur (SPOLIT)
Publikationstyp: Sammelwerksbeitrag
Medienart: Elektronische Ressource (online) Gedruckte Ressource
Dokumententyp: Tagungsband
Sprache:Englisch
ISSN:1440-2440, 1878-1861
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Erfassungsnummer:PU201709008193
Quelle:BISp

Abstract des Autors

The purpose of this case study was to investigate the stretch-shortening cycle behaviour of the knee extensor muscle-tendon unit during the power clean exercise. Kinematic and kinetic were acquired as a skilled weightlifter performed several repetitions of the power clean at 85% of 1-Repetition Maximum. Knee joint angular velocity, moment, and power time-series during the pull-phase of the power clean were calculated and used to delineate between concentric and eccentric movement phases. The analysis of the kinematic time-series data showed knee extension-flexion-extension movement pattern, whereas the analysis of the kinetic data showed that the movement pattern consisted of dynamic concentric and eccentric sequences, which highlighted stretch-shortening cycle behavior of the knee extensors, and surprisingly also the knee flexor, muscle groups.