Table 4.

Summary of mediation effects for cardiorespiratory fitness in men

Mediator	Longitudinal mediation: Δ in mediators from baseline to 6 months predicting Δ in CRF from 6 to 24 months				Contemporaneous mediation: Δ in mediators from baseline to 24 months predicting Δ in CRF from baseline to 24 months
	α coefficient (SE)	β coefficient (SE)	α β	Asymmetric confidence limit	α coefficient (SE)	β coefficient (SE)	α β	Asymmetric confidence limit
Cons of exercise
Single-mediator Model	−0.034 (0.061)	0.087 (0.335)	−0.002	−0.032, 0.022	−0.014 (0.065)	−0.901 (0.340)**	0.013	−0.105, 0.137
Multiple-mediator model		0.044 (0.393)	−0.001	−0.032, 0.027		−0.754 (0.377)*	0.011	−0.089, 0.118
Pros of exercise
Single-mediator model	0.125 (0.073)	0.020 (0.283)	0.003	−0.072, 0.079	0.246 (0.076)**	0.316 (0.297)	0.078	−0.060, 0.247
Multiple-mediator model		−0.039 (0.347)	−0.005	−0.100, 0.085		0.177 (0.338)	0.044	−0.118, 0.223
Barriers efficacy
Single-mediator model	−0.112 (1.592)	0.002 (0.013)	−0.000	−0.008, 0.007	0.136 (1.781)	0.038 (0.013)**	0.005	−0.132, 0.145
Multiple-mediator model		−0.005 (0.016)	0.006	−0.017, 0.019		0.019 (0.015)	0.003	−0.069, 0.078
Performance efficacy
Single-mediator model	2.851 (2.207)	0.017 (0.011)	0.048	−0.024, 0.167	3.733 (2.216)	0.044 (0.011)**	0.164	−0.021, 0.395
Multiple-mediator model		0.017 (0.012)	0.048	−0.027, 0.172		0.038 (0.012)**	0.142	−0.016, 0.357
Cognitive processes of change
Single-mediator model	0.027 (0.052)	0.214 (0.383)	0.006	−0.023, 0.043	0.120 (0.059)*	0.550 (0.378)	0.066	−0.018, 0.198
Multiple-mediator model		0.403 (0.513)	0.011	−0.034, 0.073)		−0.128 (0.499)	−0.015	−0.148, 0.105
Behavioral processes of change
Single-mediator model	0.148 (0.057)**	−0.130 (0.359)	−0.019	−0.135, 0.086	0.196 (0.063)**	0.844 (0.351)*	0.165	0.026, 0.362)a
Multiple-mediator model		−0.338 (0.477)	0.008	−0.213, 0.084		0.505 (0.488)	0.099	−0.081, 0.322

^aSignificant mediator

^*p<0.05

^**p<0.01