Use double quotes to find documents that include the exact phrase: "aerodynamic AND testing"
Coach's chalkboard with plays marked down.

Verbal feedback from a coach during practice can direct an athlete’s focus internally (on body movements) or externally (on the intended movement effect). Research participants instructed to focus externally (e.g. “accelerate the dart” or “hit the target”) outperformed peers who were instructed to focus internally (e.g. “accelerate the forearm” or “hand to target”).