JOINT LOADING WHILE PERFORMING A SIDE-STEP CUTTING MANOUEVRE ON ARTlClAL GRASS TURF WITH DIFFERENT INFILL DEPTHS

Ian Harris Sujae, Khalid Jabbar, Alex Ong, Joseph Hamilll

Abstract


The aim of this study was to determine differences in the joint loadings when performing side-step action on artificial grass turf with different infill depths. Significant changes in the ankle inversion angle (Ankle angle Y; p=0.01; ES=0.73), ankle inversion/eversion moment (Ankle moment Y; p=0.03; ES=0.54) and ankle abduction-adduction moment (Anklemoment Z; p=0.01; ES=0.76) at GRFSeak suggests greater loadings, in particular, at the ankle jint when performing the side-step manoeuvres on artificial grass turfs with thicker infill depths; indicating that all of the lower extremity adaptations to execute the stepside occurs at the ankle rather than the knee. A change in infill depths will cause the body posture to adopt a change in technique when executing the side-step manoeuvre. It is possible that greater joint moments elicited could be of risk to the athletes.

Keywords


joint loading; side-step; artificial grass turf; biomechanics

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ISSN 1999-4168