Please cite this article as: Konings Marco J., Schoenmakers Patrick P.J.M., Walker Andrew J., Hettinga Florentina J., The behavior of an opponent alters pacing decisions in 4-km cycling time trials, Physiology & Behavior (2016), doi: 10.1016/j.physbeh.2016 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. An interaction effect for condition x distance (F=3.944, P<0.001) indicated differences in pacing profiles between conditions. Post-hoc analysis revealed that a less aggressive starting strategy was adopted in NO compared to OP-FASTSLOW and OP-SLOWFAST during the initial 1000m. Finally, a faster starting opponent evokes higher power outputs by the participants in the initial 750m compared to a slower starting opponent. Conclusion: The present study is the first to show that the behavior of an opponent affects pacing-related decisions in laboratory-controlled conditions. Our findings support the recently proposed interdependence of perception and action, and emphasize the interaction with the environment as an important determinant for an athlete's pacing decisions, especially during the initial stages of a race.
Highlightsďˇ The pacing behavior of an opponent alters pacing decisions of an athlete in labcontrolled conditions ďˇ A faster starting opponent evokes a faster start compared to a slower starting one.ďˇ The behavior of an opponent is an important determinant for an athlete's pacing decisions, which is thus far often overlooked in investigating pacing behavior.