Table 4.

Hierarchical Forced Entry Multiple Regression of Exercise Behavior on Intention, Perceived Control, Self-Efficacy, Age, and Interactions with Age.

	Fchange	df	R2change	β1	β2	β3
(Block #1)	60.5	3,350	.34
Intention				.38***	.39***	.79***
Self-efficacy				.18*	.17*	.31
Perceived Control				.11	.11	-.55*
(Block #2)	3.7	1,349	.01
Age					-.08	-.33
(Block #3)	7.4	3,346	.04
Age*Intention						-.57**
Age*Self-efficacy						-.17
Age*Perceived Control						.95**
Total Model	31.3	7,346	.39

* = p < .05

** = p < .01

*** = p < .001

F = F ratio

df = degrees of freedom

R² = coefficient of determination

β^1–3 = standardized regression coefficients for equations #1 to #3