Tackle Technique and Changes in Playerload

In collision sports, the tackle has the highest injury incidence, and is key to a successful performance. Although the contact load of players has been measured using microtechnology, this has not been related to tackle technique. The aim of this study was to explore how PlayerLoad[TM] changes between different levels of tackling technique during a simulated tackle. Nineteen rugby union players performed twelve tackles on a tackle contact simulator (n = 228 tackles). Each tackle was recorded with a video-camera and each player wore a Catapult OptimEyeS5. Tackles were analysed using tackler proficiency criteria and split into three categories: Low scoring([less than or equal to]5 Arbitrary units (AU), medium scoring(6 and 7AU) and high scoring tackles([greater than or equal to]8AU). High scoring tackles recorded a higher PlayerLoad[TM] at tackle completion. The PlayerLoad[TM] trace was also less variable in the high scoring tackles. The variability in the PlayerLoad[TM] trace may be a consequence of players not shortening their steps before contact. This reduced their ability to control their movement during the contact and post-contact phase of the tackle and increased the variability. Using the PlayerLoad[TM] trace in conjunction with subjective technique assessments offers coaches and practitioners insight into the physical-technical relationship of each tackle to optimise tackle skill training and match preparation. Key words: Rugby, microtechnology, collisions, training, injury prevention.