Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2009) 08, 1 - 8

Research article
Bilateral ground reaction forces and joint moments for lateral sidestepping and crossover stepping tasks
Gregor Kuntze1, William I. Sellers2, Neil Mansfield1, 
Author Information
1 Department of Human Sciences, Loughborough University, Loughborough, England
2 Faculty of Life Sciences, The University of Manchester, Manchester, England

Neil Mansfield
✉ Department of Human Sciences, Loughborough University, Loughborough LE11 3TU, England
Email: N.J.Mansfield@lboro.ac.uk
Publish Date
Received: 05-05-2008
Accepted: 20-08-2008
Published (online): 01-03-2009
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ABSTRACT

Racquet sports have high levels of joint injuries suggesting the joint loads during play may be excessive. Sports such as badminton employ lateral sidestepping (SS) and crossover stepping (XS) movements which so far have not been described in terms of biomechanics. This study examined bilateral ground reaction forces and three dimensional joint kinetics for both these gaits in order to determine the demands of the movements on the leading and trailing limb and predict the contribution of these movements to the occurrence of overuse injury of the lower limbs. A force platform and motion-analysis system were used to record ground reaction forces and track marker trajectories of 9 experienced male badminton players performing lateral SS, XS and forward running tasks at a controlled speed of 3 m·s-1 using their normal technique. Ground reaction force and kinetic data for the hip, knee and ankle were analyzed, averaged across the group and the biomechanical variables compared. In all cases the ground reaction forces and joint moments were less than those experienced during moderate running suggesting that in normal play SS and XS gaits do not lead to high forces that could contribute to increased injury risk. Ground reaction forces during SS and XS do not appear to contribute to the development of overuse injury. The distinct roles of the leading and trailing limb, acting as a generator of vertical force and shock absorber respectively, during the SS and XS may however contribute to the development of muscular imbalances which may ultimately contribute to the development of overuse injury. However it is still possible that faulty use of these gaits might lead to high loads and this should be the subject of future work.

Key words: Badminton, movement, biomechanics, injury.


           Key Points
  • Ground reaction forces and joint moments during lateral stepping are smaller in magnitude than those experienced during moderate running.
  • Force exposure in SS and XS gaits in normal play does not appear to contribute to the development of overuse injury
  • The leading and trailing limbs perform distinct roles, acting as a generator of vertical force and shock absorber respectively.
  • This distinct contribution may contribute to the development of muscular imbalances which may ultimately contribute to the development of overuse injury.
 
 
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