It does not seem to have affected his concentration during the games.

And what if their drugs affected my concentration so that the switch could not be made?

The icy pressure would drastically affect his concentration and performance.

"The live racing is just a big distraction, it affects my concentration."

He closed his eyes in a mannerism that at medical school had affected concentration.

Does not knowing where they will play this fall affect the Raiders' preparation and concentration?

The coach acknowledged that the frustrations have affected his team's concentration.

You're not letting anything affect your focus or concentration.

It was unnerving to realize how Samuel's return had affected her concentration.

Another survey indicated that music could affect adversely a driver's concentration.