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Mri Study Of The Size, Symmetry And Function Of The Trunk Muscles Among Elite Cricketers With And Without Low Back Pain
  1. Julie A Hides (j.hides{at}shrs.uq.edu.au)
  1. Division of Physiotherapy, School of Health and Rehabilitation Sciences, The University of Queens, Australia
    1. Warren R Stanton
    1. UQ/ Mater Back Stability Clinic, Mater Health Services, South Brisbane, Queensland, Australia, 41, Australia
      1. Matt Freke
      1. Physiotherapy department. Second Health Support Battalion, Gallipoli Barracks, Enoggera, Brisbane, Australia
        1. Stephen Wilson
        1. School of IT and Electrical Engineering, The University of Queensland, Brisbane, Australia, 4072, Australia
          1. Shaun McMahon
          1. Commonwealth Bank Centre of Excellence, Brisbane, Queensland, Australi, Australia
            1. Carolyn A Richardson
            1. Division of Physiotherapy, School of Health and Rehabilitation Sciences, The University of Queens, Australia

              Abstract

              Objectives: To determine if asymmetry of trunk muscles and deficits of motor control exist among elite cricketers with and without low back pain (LBP). Design: Single blinded observational quasi-experimental design study Setting: Assessments were conducted in a hospital setting. Participants: Among a total eligible sample of 26 male elite cricketers (21.2 „b 2.0 years of age), selected to attend a national training camp, 21 participated in the study. Risk factors: The independent variables were ¡¥group¡¦ (LBP or asymptomatic) and ¡¥cricket position¡¦ (fast bowler versus the rest of the squad) Main Outcome Measurements: The dependent variables were the cross-sectional areas (CSA) of the quadratus lumborum (QL), lumbar erector spinae plus multifidus (LES + M) and psoas muscles, the thickness of the internal oblique (IO) and transversus abdominis (TrA) muscles and the amount of lateral slide of the anterior abdominal fascia. Results: The QL and LES + M muscles were larger ipsilateral to the dominant arm. In the sub-group of fast bowlers with LBP the asymmetry in the QL muscle was the greatest. The IO muscle was larger on side contralateral to the dominant arm. No difference between sides was found for the psoas and TrA muscles. Cricketers with LBP showed a reduced ability to draw-in the abdominal wall and contract the TrA muscle independently of the other abdominal muscles. Conclusions: This study provides new insights into trunk muscle size and function in elite cricketers, and evidence of impaired motor control in elite cricketers with LBP. Rehabilitation using a motor control approach has been shown to be effective for subjects with LBP, and this may also benefit elite cricketers.

              • MRI
              • cricket
              • lumbo-pelvic stabilization
              • quadratus lumborum muscle
              • transversus abdominis muscle

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