The use of the functional H:Q ratio to assess fatigue in soccer
Deutscher übersetzter Titel: | Die Verwendung eines funktionellen Verhältnisses von ischiocruraler Muskulatur zum Quadricepsmuskel zur Messung von Ermüdung im Fußball |
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Autor: | Delextrat, Anne; Gregory, J.; Cohen, D. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 31 (2010), 3, S. 192-197, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-0029-1243642 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201007005328 |
Quelle: | BISp |
Abstract
The aim of this study was to investigate the effects of fatigue induced by a field test representative of soccer specific movements on different hamstrings:quadriceps ratios in the dominant and non-dominant legs at two different velocities. Eight male football players (age: 21.3 +/- 2.3 years; height: 178 +/- 8 cm; body mass: 78 +/- 9 kg; playing level: British University Southern conference-3B) performed a pre-test to assess the concentric and eccentric strength of the hamstrings and the quadriceps at 60°/s and 180°/s, The Loughborough Intermittent Shuttle Test (LIST) to simulate soccer, and a post-test similar to the pre-test. The main findings demonstrated significant decreases in the Hcon:Qcon ratio (calculated as the maximal concentric hamstrings strength divided by the maximal concentric quadriceps strength) in the dominant leg at 180°/s and in the functional ratio Hecc:Qcon (calculated as the maximal eccentric hamstrings strength divided by the maximal concentric quadriceps strength) in the dominant leg at 60°/s and 180°/s. In addition, significant correlations were observed between physiological parameters measured during the soccer-specific exercise and Hecc:Qcon only. These results suggested that the functional Hecc:Qcon ratio is more representative of fatigue induced by soccer than the conventional Hcon:Qcon ratio. Eccentric strength training at high velocities may be necessary to reduce injury risk in soccer players. Verf.-Referat