Business operational sustainability is a method of evaluating whether a business can maintain existing practices without placing future resources at risk. Sustainability can refer to any one of a ...

7 Australian Centre for Research into Injury in Sport and its Prevention (ACRISP), Federation University, Ballarat, Australia Concussion is the number one injury risk in contact and collision sports.

Objectives Various definitions for concussion have been proposed, each having its strengths and weaknesses. We reviewed and compared current definitions and identified criteria necessary for an ...