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World Rugby mouthguards not so smart

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Rugby is trying to fix a problem that may not exist, writes SIMON BORCHARDT.

“What for?” a visibly frustrated Anton Lienert-Brown gestured to the Chiefs dugout, having just been told to leave the field for a concussion test despite not taking a head knock.

The reason for their departures? World Rugby’s ‘smart’ mouthguards, which measure a direct or indirect “head acceleration event” that occurs when a player’s head is knocked sideways in a tackle, carry or ruck. If the impact for a male rugby player is more than 70G and/or 4,000 radians per second squared , the app sends an alert via bluetooth to a doctor, who pulls the player from the field for a concussion test. The threshold for female rugby players is 55G.

“I saw the tackle again – just a normal tackle,” he said. “I think we have to really watch what we’re doing here. Trust in technology that’s not been proven.”

 

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