Table 1: Simple bivariate Pearson correlations between demographic variables, cardiorespiratory fitness, and behavioral data. *Significant at 𝑃 < . 0 5 ; **significant at 𝑃 < . 0 1 .

VO2AgeSexEducationBMI

Flanker
 Con RT−.178*.283**.207**.009−.036
 Inc RT−.144.162*.211**.042−.056
 Cost (RT).020−.179*.064.023−.034
 Con Acc.199**−.277**−.133.092.060
 Inc Acc.112−.168*−.022.052.009
 Cost (Acc)−.055.099.084−.015−.060
Task-switch
 Repeat RT−.021.006.135−.034.005
 Switch RT−.082−.011.173*−.105.020
 Cost (RT)−.071−.004.151−.088.025
 Repeat Acc.174*−.224**.001.040.135
 Switch Acc.231**−.270**−.032.061.130
 Cost (Acc).190*−.281**−.027.022.154