The main aim of this study was to compare the decision-making performance of college soccer players on a
soccer-speciWc, tachistoscopically presented test, at rest and while exercising at their adrenaline threshold and at
their maximum power output. These were determined following an incremental test to exhaustion on a cycle
ergometer. After the initial maximum power test, participants (n = 9) were allowed 10 habituation trials on the
soccer decision-making test. Participants’ decision-making performance was tested at rest, while cycling at a
power output that had previously been determined to elicit their adrenaline threshold and while cycling at
maximum power output. Accuracy and speed of decision were the dependent variables. A one-way repeatedmeasures
analysis of variance showed no signiWcant eV ect of exercise on accuracy, and showed speed of decision
to be signiWcantly aV ected by exercise. Tukey post-hoc tests showed that speed of decision at rest was signiWcantly
slower than in the other two conditions, which did not diV er signiWcantly from one another. Based on allocatable
resources theories of arousal and performance, we conclude that the adrenaline threshold may be indicative of
increases in the resources available to the individual. Furthermore, we considered that exercise at maximum
power output may only induce a moderate rather than a high level of arousal.