A test of cognitive mediation in a 12-month physical activity workplace intervention: does it explain behaviour change in women?

Table 3 Group means (i.e., stage-matched vs. CPAG + control), unstandardized regression coefficients, p-values, effect-size, and power for the remaining six of 14 potential mediating psychological constructs.

	Group Means
	Stage-matched	Control + CPAG	B	p	R²	power
Response efficacy
Initial Change	0.056	-0.007	0.063	0.187	0.005	0.261
Delayed Change	0.046	-0.011	0.057	0.382	0.002	0.141
Overall Change	0.073	-0.019	0.092	0.160	0.006	0.290
Attitude
Initial Change	-0.090	-0.003	-0.087	0.079	0.010	0.420
Delayed Change	-0.016	0.008	-0.025	0.567	0.001	0.088
Overall Change	-0.055	0.010	-0.066	0.187	0.005	0.261
Injunctive norms
Initial Change	0.080	0.054	0.026	0.640	0.001	0.075
Delayed Change	0.024	-0.018	0.041	0.469	0.002	0.112
Overall Change	0.062	0.001	0.061	0.288	0.004	0.186
Descriptive norms
Initial Change	0.056	0.009	0.046	0.507	0.001	0.101
Delayed Change	0.054	0.005	0.049	0.466	0.002	0.113
Overall Change	0.086	0.000	0.086	0.236	0.004	0.220
Social support
Initial Change	0.098	0.041	0.057	0.435	0.002	0.122
Delayed Change	-0.017	-0.005	-0.012	0.879	< .001	0.053
Overall Change	0.057	0.008	0.050	0.552	0.001	0.091
Perceived behavioral control
Initial Change	0.008	0.026	-0.018	0.798	< 0.001	0.058
Delayed Change	0.038	-0.009	0.046	0.450	0.002	0.117
Overall Change	0.026	-0.012	0.038	0.569	0.001	0.088

ISSN: 1479-5868