Executive Function Strengths in Athletes: a Systematic Review and Meta-Analysis

Objective: Whether athletes possess superior executive functions still needs further examination. Therefore, the aim of this study is to explore the executive function advantages of athletes and the differences in these advantages between open- and closed-skill sports through systematic review and meta-analysis. Methods: Computer searches of CNKI, Web of Science, PubMed, ScienceDirect, and SPORTDiscus databases were conducted. After document selection, data extraction, and quality assessment by two researchers, data processing, statistical analysis, and visual presentation were performed using SPSS 25.0, Stata 16.0, and GraphPad Prism 8 software. Results: A total of 41 articles were included, including 3845 athletes with a mean age of 9.6-42.8 years. Athletes showed more positive inhibitory control (Z = 5.18, standardized mean difference (SMD) = -0.631, 95% confidence intervals (CI) = -0.869 to -0.392, p = 0.000) and working memory (Z = 3.42, SMD = -0.382, 95%CI = -0.601 to -0.163, p = 0.001) compared to the general group with no sports experience. Elite and sub-elite, and sub-elite and amateur athletes all showed more positive performance on the cognitive flexibility task compared to the latter. In addition, open-skilled athletes performed more positively on working memory and cognitive flexibility tasks compared to closed-skilled athletes. Egger linear regression analysis revealed a possible publication bias for inhibitory control, whereas there was no publication bias for working memory and cognitive flexibility. Univariate meta-regression analysis revealed that date of publication (beta = 0.145) and sample size (beta = -0.002) were sources of heterogeneity between studies for the inclusion of cognitive flexibility (p < 0.05). The sensitivity analysis of the one-by-one elimination method and the cut-and-patch method found the results to be relatively robust and reliable. Conclusion: Athletes have superior executive function performance that increases with sports experience. In addition, open-skilled athletes showed more positive executive function. The result has guiding significance for the selection and training of athletes in the future.