Exercise is Effortful: Executive Functions Predict Strenuous Exercise in the Past Week
Abstract Purpose Executive functions (EF) are a dynamic collection of complex cognitive processes governing volitional, goal-directed behaviour. EFs are particularly susceptible to environmental influences such as exercise or concussion. Exercise improves EF but it is unclear if having good EF improves exercise engagement habits. Expanding upon a previously derived higher-order, four-factor screener for executive behaviour problems (Duggan et al., 2018), we extracted a common EF factor using a bifactor structure and examined if self-reported executive difficulties predict weekly engagement in strenuous exercise. We also examined if a history of concussion affects self-ratings of executive difficulties. Methods 197 university students (Mean age=20.46; 79% female) completed the BASC-2-COL and self-report of concussion history and past 7-day exercise habits. An a-priori bifactor model of executive behaviour was established using CFA. Using SEM, the bifactor latent executive function was used to predict past 7-day exercise. Concussion history was used to predict variations in the bifactor executive function. Results Bifactor fit indices were not optimal but generally adequate (CFI=.897; TLI=.868; RMSEA=.037). Latent bifactor EF was predictive of past week strenuous exercise (p=.046). Concussion history was not predictive of EF problems (p=.296). Conclusion Results suggest that latent EF predicts recent strenuous exercise engagement. Baseline EF should be accounted for when examining the positive effects of exercise. Having a history of one or more concussions did not appear to influence current self-report of behavioral EF problems.