One of the biggest issues you may face with your customers is the lack of a good definition of what you think you are doing and how they define it. Operational definitions are the key to better ...

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.

Correspondence to Dr Kenneth Lincoln Quarrie, High Performance Unit, New Zealand Rugby, 100 Molesworth Street, Wellington 6140, New Zealand; ken.quarrie{at}nzrugby.co.nz The Zürich Consensus Statement ...