Repeated side-cutting knee and hip biomechanics for a macro-cycle of a professional rugby league season

Hdl Handle:
http://hdl.handle.net/10034/620383
Title:
Repeated side-cutting knee and hip biomechanics for a macro-cycle of a professional rugby league season
Authors:
Stirling, Ben
Abstract:
The aim of this study was to determine the variability of lower-limb side-cutting biomechanics in professional rugby league players during a season. Thirteen male professional players were included with a mean age of 22 ±3.4 years. The study used a one-way repeated measures experimental design. Subjects were tested at three time points, separated by four weeks, over the last three months of a season. Peak knee valgus and internal rotation moments (Nm/kg- 1), and flexion angle (°), and hip abduction moment (Nm/kg-1) during the weight-acceptance of the stance phase were collected for all side-cutting maneuvers. A one way repeated-measures ANOVA was performed on the data with Bonferroni post-hoc analysis identifying differences between testing sessions. Mean hip and knee kinematics and kinetics were similar for all measures. There was a significant difference in peak knee flexion angle (°) (Left = F(1, 17) =4.895, Right = F(2, 24) =6.603) and knee valgus moment (Nm/kg-1) (Left =F(2, 24) =9.535, Right =F(2, 24) =6.060) showing significant variability between testing sessions one and three for right knee flexion and knee valgus in both limbs. Bi-lateral knee valgus moments were also significantly different between sessions two and three. Professional rugby league players have shown to be more efficient during the weight-acceptance phase of a side-cutting manoeuver compared to recreational athletes which may be beneficial to reducing frontal plane knee loading and injury risk at the knee. In addition, this study has reinforced the link between the hip and the knee in providing proximal stability for distal mobility.
Advisors:
Smith, Grace
Citation:
Stirling, B. (2016). Repeated side-cutting knee and hip biomechanics for a macro-cycle of a professional rugby league season (Master's thesis). University of Chester, United Kingdom.
Publisher:
University of Chester
Publication Date:
Sep-2016
URI:
http://hdl.handle.net/10034/620383
Type:
Thesis or dissertation
Language:
en
Appears in Collections:
Masters Dissertations

Full metadata record

DC FieldValue Language
dc.contributor.advisorSmith, Graceen
dc.contributor.authorStirling, Benen
dc.date.accessioned2017-02-16T16:43:08Z-
dc.date.available2017-02-16T16:43:08Z-
dc.date.issued2016-09-
dc.identifier.citationStirling, B. (2016). Repeated side-cutting knee and hip biomechanics for a macro-cycle of a professional rugby league season (Master's thesis). University of Chester, United Kingdom.en
dc.identifier.urihttp://hdl.handle.net/10034/620383-
dc.description.abstractThe aim of this study was to determine the variability of lower-limb side-cutting biomechanics in professional rugby league players during a season. Thirteen male professional players were included with a mean age of 22 ±3.4 years. The study used a one-way repeated measures experimental design. Subjects were tested at three time points, separated by four weeks, over the last three months of a season. Peak knee valgus and internal rotation moments (Nm/kg- 1), and flexion angle (°), and hip abduction moment (Nm/kg-1) during the weight-acceptance of the stance phase were collected for all side-cutting maneuvers. A one way repeated-measures ANOVA was performed on the data with Bonferroni post-hoc analysis identifying differences between testing sessions. Mean hip and knee kinematics and kinetics were similar for all measures. There was a significant difference in peak knee flexion angle (°) (Left = F(1, 17) =4.895, Right = F(2, 24) =6.603) and knee valgus moment (Nm/kg-1) (Left =F(2, 24) =9.535, Right =F(2, 24) =6.060) showing significant variability between testing sessions one and three for right knee flexion and knee valgus in both limbs. Bi-lateral knee valgus moments were also significantly different between sessions two and three. Professional rugby league players have shown to be more efficient during the weight-acceptance phase of a side-cutting manoeuver compared to recreational athletes which may be beneficial to reducing frontal plane knee loading and injury risk at the knee. In addition, this study has reinforced the link between the hip and the knee in providing proximal stability for distal mobility.en
dc.language.isoenen
dc.publisherUniversity of Chesteren
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectBiomechanicsen
dc.subjectrugbyen
dc.subjectrugby leagueen
dc.titleRepeated side-cutting knee and hip biomechanics for a macro-cycle of a professional rugby league seasonen
dc.typeThesis or dissertationen
dc.type.qualificationnameMScen
dc.type.qualificationlevelMasters Degreeen
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