Table 3.

Hierarchal multiple regression model for change in exercise time (T2-T1).

Model	Variable	${\mathit{R}}^2$	$\mathbf{Adj}{\mathit{R}}^2$	$\mathit{\Delta }{\mathit{R}}^2$	B	SE B	$\mathit{\beta }$	t	p	95% CI
1	Motivation	0.01	−0.01	0.01	3.20	4.34	0.08	0.74	0.46	−0.54, 11.8
2	Motivation	0.27	0.26	0.27 ^	5.48	3.76	0.14	1.46	0.15	−1.99, 12.9
	Intentions				−0.37	0.07	−0.52	−5.47	0.00 **	−0.50, −0.23
3	Motivation	0.41	0.39	0.14 ^	5.16	3.40	0.13	1.52	0.13	−1.61, 11.9
	Intentions				0.22	0.15	0.31	1.49	0.14	−0.08, 0.51
	Habits				−0.65	0.15	−0.91	−4.38	0.00 **	−0.94, −0.35
4	Motivation	0.44	0.42	0.03 ^	2.23	3.59	0.06	0.62	0.54	−4.91, 9.38
	Intentions				0.22	0.14	0.30	1.54	0.14	−0.07, 0.50
	Habits				−0.70	0.15	−0.98	−4.84	0.00 **	−0.99, −0.41
	Action Planning				9.98	4.62	0.21	2.60	0.03 *	0.79, 19.2
5	Motivation	0.45	0.42	0.01	2.95	3.68	0.07	0.80	0.42	−4.36, 10.3
	Intentions				0.24	0.15	0.34	1.65	0.10	−0.05, 0.54
	Habits				−0.72	0.15	−1.01	−4.84	0.00 **	−1.01, −0.42
	Action Planning				1254	5.35	0.26	2.34	0.02 *	1.85, 23.2
	Coping Planning				−5.69	6.09	−0.10	−0.94	0.35	−17.8, 6.42

Note. * = significant at p < 0.05 level, ** = statistically significant at p < 0.001 level, ^ = significant $\Delta R^2$.