Caudate Nucleus Volume Mediates the Link between Cardiorespiratory Fitness and Cognitive Flexibility in Older Adults

Table 1

Simple bivariate Pearson correlations between demographic variables, cardiorespiratory fitness, and behavioral data. ^*Significant at 𝑃<.05; ^**significant at 𝑃<.01.

	VO2	Age	Sex	Education	BMI
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