Table 2.

Regression analysis for the associations between cardiorespiratory fitness, age, the 2-back task, and the Flanker task.

	2-back task		Flanker task
Model and variable			Congruent		Incongruent
	ΔR2	β	ΔR2	β	ΔR2	β
Response time
Step 1	0.06**		0.03**		0.04**
CRF		−0.06		−0.16**		−0.13*
Age		−0.25**		−0.16**		−0.17**
BMI		0.03		−0.08		−0.10
Step 2	<0.001		0.004		0.004
CRF		−0.08		−0.08		−0.04
Age		−0.26**		−0.15**		−0.16**
BMI		0.04		−0.09		−0.11
CRF × Age		0.02		−0.10		−0.11
Accuracy
Step 1	0.07**		0.002		0.003
CRF		0.13*		0.02		0.01
Age		0.29**		0.03		0.06
BMI		0.03		0.03		0.01
Step 2	0.01		0.002		0.001
CRF		0.02		0.08		0.05
Age		0.28**		0.04		0.06
BMI		0.03		0.03		0.01
CRF × Age		0.13		−0.07		−0.05

BMI, body mass index; CRF, cardiorespiratory fitness.

^*p ≤ 0.05;

^**p ≤ 0.01.