Relationships between stretch-shortening cycle performance and maximum muscle strength
Deutscher übersetzter Titel: | Beziehungen zwischen der Dehnungs-Verkürzungs-Zyklus-Leistung und der maximalen Muskelkraft |
---|---|
Autor: | Miyaguchi, Kazuyoshi; Demura, Shinichi |
Erschienen in: | Journal of strength and conditioning research |
Veröffentlicht: | 22 (2008), 1, S. 19-24, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 1064-8011, 1533-4287 |
DOI: | 10.1519/JSC.0b013e31815f2f94 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU200911005963 |
Quelle: | BISp |
Abstract des Autors
This study aimed to examine the relationships between muscle power output using the stretch-shortening cycle (SSC) and maximum strength, as measured by the 1 RM (1 repetition maximum) test and the isokinetic dynamometer under elbow flexion. Sixteen trained, young adult males pulled a constant load of 40% MVC (maximum voluntary elbow flexion contraction) by ballistic elbow flexion under the following two preliminary conditions: 1) the static relaxed muscle state (SR condition) and 2) using the SSC (SSC condition). Muscle power was determined from the product of the pulling velocity and load mass by a power measurement instrument with a rotary encoder. The 1 RM bench press (1RM BP) and isokinetic maximum strength under elbow flexion with the Cybex-325 were measured as indicators of dynamic maximum strength. 1) The early power output exerted under the SSC condition showed a significant and high correlation with the 1 RM BP (r = 0.83), but only moderate correlation with the isokinetic muscle strength (r = 0.50-0.67). 2) The contribution of the 1 RM BP to the early muscle contraction velocity exerted under the SSC condition was large. These results suggested that muscle power exerted using the SSC shows a stronger relationship with maximum muscle strength measured by a 1 RM test rather than isokinetic maximum strength. Verf.-Referat