Use double quotes to find documents that include the exact phrase: "aerodynamic AND testing"
Blackboard with a sport whistle with writing on the board "Sport Concussion"

Diagnosing concussions in athletes and deciding on return-to-play strategies often relies on subjective measurements. The Concussion Index can help reduce subjectivity by using brain electrical activity and machine learning to diagnose concussions. Improved diagnosis reliability can help reduce concussion-related disabilities in athletes.