This week World Rugby announced that they will be including head accelerations measured by smart mouthguards into the sport's head injury assessment protocols used at the top level of the game to help identify potential head injuries during a game. This is how they work, why the tech could be a game changer and the challenges facing their adoption. Credits: Opening clip Rugby World Cup Youtube channel SHOW NOTES Sean Ingle’s piece on the instrumented mouthguard technology Two articles that explore the elusive (and likely impossible) concussion threshold And journals.lww.com/acsm-essr/fulltext/2011/01000/biomechanics_of_sport_concussion__quest_for_the.3.aspx Russ Petty tweet on playing time of the semi-finalists My article on the iMGs from the Patron page, now public Get bonus content on Patreon Hosted on Acast. See acast.com/privacy for more information.