Effect of caffeine on RPE and perceptions of pain, arousal, and pleasure/displeasure during a cycling time trial in endurance trained and active men

► Affect is measured with the Feeling Scale and Felt Arousal Scale. ► Affect is altered with acute exercise, and this response varies between fit and unfit persons. ► Caffeine improves mood and performance on various cognitive tasks. ► Data reveal no change in RPE or mood, but altered pleasure/displeasure during exercise. ► Alterations in pleasure/displeasure may be used for exercise programming.