Table 8.

Summary of mediation effects for cardiorespiratory fitness in women

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 change 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	−0.019 (0.079)	0.193 (0.305)	−0.004	−0.042, 0.029	−0.061 (0.085)	−0.796 (0.308)*	0.049	−0.080, 0.205
Multiple-mediator model		0.018 (0.344)	−0.000	−0.015, 0.014		−0.340 (0.336)	0.021	−0.038, 0.109
Pros of exercise
Single-mediator model	0.099 (0.091)	0.433 (0.249)	0.043	−0.030, 0.155	−0.061 (0.104)	0.008 (0.250)	−0.000	−0.034, 0.033
Multiple-mediator model		0.386 (0.321)	0.038	−0.034, 0.155		−0.200 (0.287)	0.012	−0.036, 0.079
Barriers efficacy
Single-mediator model	−1.443 (1.995)	−0.012 (0.012)	0.017	−0.032, 0.091	3.974 (2.438)	0.039 (0.011)**	0.155	−0.024, 0.387
Multiple-mediator model		−0.015 (0.015)	0.022	−0.040, 0.113		0.033 (0.014)*	0.131	−0.018, 0.359
Performance efficacy
Single-mediator model	3.325 (3.055)	−0.000 (0.009)	−0.001	−0.067, 0.063	3.816 (3.341)	0.018 (0.008)*	0.069	−0.041, 0.226
Multiple-mediator model		0.005 (0.010)	0.017	−0.049, 0.105		0.012 (0.009)	0.046	−0.034, 0.176
Cognitive processes of change
Single-mediator model	0.036 (0.068)	0.552 (0.332)	0.020	−0.052, 0.112	0.051 (0.071)	0.040 (0.376)	0.002	−0.039, 0.046
Multiple-mediator model		0.858 (0.480)	0.031	−0.081, 0.172		−0.284 (0.460)	−0.014	−0.091, 0.040
Behavioral processes of change
Single Mediator Model	0.274 (0.071)**	0.036 (0.321)	0.010	−0.166, 0.189	0.248 (0.080)**	1.046 (0.338)**	0.259	0.066, 0.525a
Multiple-mediator model		−0.653 (0.482)	−0.179	−0.483, 0.071		0.403 (0.463)	0.100	−0.118, 0.362

^aSignificant mediator

^*p<0.05

^**p<0.01