The effects of internal versus external information processing on symptom perception in an exercise setting.

The purpose of our study was to determine the effects of internal versus external attentional focus on symptom perception and performance in an exercise setting. Fifteen introductory psychology undergraduates ran 1 mile under each of three experimental conditions: "word-cue," in which subjects were required to focus externally by listening for a target word heard repeatedly over headphones; "breathing," in which subjects were directed to attend to their own breathing and heart rate; and a control. Results indicated that participants reported significantly less symptomatology, particularly exercise-relevant symptoms, in the word-cue condition than in the breathing or control conditions. The findings are discussed with reference to previous theory in this area, and methodological differences between this and earlier research are delineated.