Velocity and acceleration before contact in the tackle during rugby union matches
Deutscher übersetzter Titel: | Geschwindigkeit und Beschleunigung vor dem Kontakt im Angriff während eines Rugbyspiels der Rugby Union |
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Autor: | Hendricks, Sharief; Karpul, David; Nicolls, Fred; Lambert, Michael |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 30 (2012), 12, S. 1215-1224, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640414.2012.707328 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201402001041 |
Quelle: | BISp |
Abstract
The velocity and acceleration at which the ball-carrier or tackler enters the tackle may contribute to winning the contest and prevailing injury free. Velocity and acceleration have been quantified in controlled settings, whereas in match-play it has been subjectively described. The purpose of this study was to determine the velocity and acceleration of the ball-carrier and tackler before contact during match-play in three competitions (Super 14, Varsity Cup, and Under-19 Currie Cup). Using a twodimensional scaled version of the field, the velocity and acceleration of the ball-carrier and tackler were measured at every 0.1 s to contact for 0.5 s. For front-on tackles, a significant difference (P<0.05) between the ball-carrier (4.6+1 m _ s–1) and tackler (7.1+3.5 m _ s–1) was found at the 0.5 s time to contact interval in the Varsity Cup. For side-on tackles, differences between the two opposing players were found at 0.5 s (ball-carrier: 4.6+1.7 m _ s–1; tackler: 3.1+1.2 m _ s–1) and 0.4 s (ball-carrier: 6.3+2.3 m _ s–1; tackler: 3.7+1.6 m _ s–1) at Under-19 level. After 0.4 s, no significant differences (P>0.05) were evident. Also, the ball-carrier’s velocity over the 0.5 s was relatively stable compared with that of the tackler. Results suggest that tacklers adjust their velocity to reach a suitable relative velocity before making contact with the ball-carrier. Verf.-Referat