Specific tackling situations affect the biomechanical demands experienced by rugby union players

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Abstract

Tackling in Rugby Union is an open skill which can involve high-speed collisions and is the match event associated with the greatest proportion of injuries. The purpose of this study was to analyse the biomechanics of rugby tackling under different three movement conditions: from a stationary position, with the dominant shoulder and with the non-dominant shoulder, and moving forward, with the dominant shoulder. A specially devised contact simulator, a 50 kg punch bag instrumented with pressure sensors, was translated towards the tackler (n=15) in trials to evaluate the effect of laterality (dominant vs. non-dominant side) and tackling approach (standing vs. moving) on the external loads absorbed by the tackler, on head and trunk motion, and on trunk muscle activities. Peak impact force was substantially higher in the stationary dominant (2.84 ± 0.74 kN) than in the stationary non-dominant condition (2.44 ± 0.64 kN), but lower than in the moving condition (3.40 ± 0.86 kN). Muscle activation started on average 300 ms before impact, with higher activation for impact-side trapezius and non-impact side erector spinae and gluteus maximus muscles. Players’ technique for non-dominant side tackles was less compliant with current coaching recommendations in terms of cervical motion (more neck flexion and lateral bending were observed in the stationary non-dominant condition) and players could benefit from specific coaching focus on non-dominant side tackles.
Original languageEnglish
Pages (from-to)58-75
Number of pages18
JournalSports Biomechanics
Volume16
Issue number1
Early online date11 Jul 2016
DOIs
Publication statusPublished - 2017

Keywords

  • Biomechanics
  • Rugby
  • Injury prevention

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